casemark/evaluating-startup-business-models

Evaluating Startup Business Models

When To Use

• Screening a startup pitch deck or investment memo for fund consideration
• Performing diligence on business model sustainability before term sheet
• Comparing multiple deal opportunities within a sector thesis
• Reassessing portfolio company model evolution at follow-on decision points
• Advising founders on model weaknesses prior to fundraise

Inputs To Gather

• Pitch deck or investment memo — value proposition, go-to-market, competitive landscape
• Financial model or projections — revenue build, cost structure, cash burn, runway
• Unit economics data — CAC, LTV, payback period, gross margin per cohort if available
• Market sizing materials — TAM/SAM/SOM methodology, bottom-up vs. top-down estimates
• Product usage metrics — retention curves, engagement data, NPS or activation rates
• Cap table and prior funding history — dilution context, investor quality, round terms
• Competitive/comparable set — direct competitors, adjacent incumbents, public comps if relevant

Workflow

1. Business Model Canvas Decomposition

Break the model into its nine canvas elements and evaluate each:

• Value Proposition: Is the problem acute and frequent? Is the solution 10x better or merely incremental? Identify whether this is a vitamin vs. painkiller.
• Customer Segments: How narrowly defined is the beachhead? Is there evidence of segment-specific traction (not just broad aspiration)?
• Channels: Organic vs. paid mix. Evaluate channel concentration risk — dependence on a single platform (e.g., Meta ads, App Store) is a red flag.
• Revenue Streams: Recurring vs. transactional. Marketplace take rate vs. SaaS subscription vs. usage-based. Assess pricing power and expansion revenue potential.
• Key Resources / Activities: What is defensible — proprietary data, network effects, regulatory moats, switching costs? Rate moat strength as weak/moderate/strong.
• Cost Structure: Fixed vs. variable ratio. Identify whether the model has operating leverage (costs grow slower than revenue at scale).
• Key Partnerships: Dependency risk on any single partner for distribution, supply, or technology.

2. Unit Economics Validation

• CAC Calculation: Confirm whether CAC is fully loaded (includes sales salaries, tooling, content) or only paid media spend. Flag if blended across organic and paid. [VERIFY]
• LTV Calculation: Check discount rate assumptions, churn methodology (logo vs. revenue churn), and cohort vintage. LTV/CAC > 3x is baseline; confirm payback period < 18 months for capital-efficient models.
• Gross Margin: SaaS targets > 70%; marketplace > 50% of net revenue; hardware/physical goods models require clear path to 40%+. [VERIFY] against sector benchmarks.
• Contribution Margin: Calculate per-unit contribution after variable costs. If negative at current scale, assess the volume threshold to breakeven and whether the funding runway covers it.
• Cohort Behavior: Look for improving retention in recent cohorts (sign of product-market fit tightening) vs. degrading cohorts (sign of market saturation or quality decline).

3. Market Timing & Sizing Assessment

• Why Now: Identify the enabling catalyst — regulatory change, technology inflection, behavioral shift, cost curve crossing. Weak "why now" answers (e.g., "the market is big") are a negative signal.
• TAM Validation: Reject top-down-only sizing. Require a bottom-up build: number of target customers x realistic ACV = addressable market. Cross-check with comparable company revenue run rates.
• Market Structure: Winner-take-all vs. fragmented? Network-effect businesses justify higher entry valuations; fragmented markets demand clearer differentiation.
• Timing Risk: Too early (market not ready, requires heavy education) vs. too late (incumbents entrenched, customer acquisition costs rising). Assess based on adoption curve position.

4. Competitive & Defensibility Analysis

• Map the competitive landscape on two axes relevant to the sector (e.g., price vs. breadth, self-serve vs. enterprise, horizontal vs. vertical).
• Identify the startup's claimed differentiation and test whether it is durable or easily replicable.
• Assess founder-market fit: domain expertise, proprietary insight, relevant operator experience.

5. Risk Flagging & Investment Thesis Synthesis

• Categorize risks as: model risk (unit economics don't work), market risk (timing/sizing wrong), execution risk (team gaps), funding risk (capital needs exceed likely raises).
• State the core investment thesis in 2-3 sentences: what must be true for this to return the fund.
• Assign an overall conviction rating: Strong Pass / Pass / Further Diligence / Soft Conviction / High Conviction.

Output

Produce an Evaluation Report structured as:

1. Executive Summary — one-paragraph thesis with conviction rating
2. Business Model Canvas Assessment — element-by-element findings with strength ratings
3. Unit Economics Scorecard — table with CAC, LTV, LTV/CAC, payback, gross margin, contribution margin
4. Market Assessment — TAM validation, timing evaluation, competitive positioning map
5. Key Risks — ranked list with severity (high/medium/low) and mitigation paths
6. Recommendation — pass/pursue with conditions, suggested next diligence steps if pursuing

Quality Checks

• All financial figures are sourced or explicitly marked as management estimates vs. independently derived
• Unit economics use fully loaded costs, not cherry-picked metrics
• TAM is validated bottom-up, not reliant solely on analyst reports
• Competitive analysis includes at least 3-5 named competitors with differentiation assessed
• Every assumption that depends on market conditions or stage-specific benchmarks is tagged [VERIFY]
• Conviction rating is consistent with the risk and unit economics findings — no mismatch between narrative and score
• Report avoids promotional language; tone is analytical and balanced