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My First Million

My First Million

The best business ideas come from noticing what's working and doing it better, faster, or for a different audience.

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Reinvestment Runway Analysis

Evaluating businesses based on how effectively they can reinvest profits back into growth versus needing to deploy capital elsewhere

Decision Rule

If $1 of profit can generate more than $1 of additional profit when reinvested, keep investing; if not, extract profits for deployment elsewhere

How It Works

Different businesses have different capacities for profitable reinvestment - identify this threshold to optimize capital allocation

Failure Modes

Continuing to reinvest past the point of diminishing returns

Not recognizing when a business has hit its reinvestment ceiling

Extracting profits too early from high-return businesses

Example Decision

Warren Buffett stops reinvesting in businesses with low reinvestment potential and redeploys capital to acquire new businesses with higher returns