The short answer
The shape of the risk differs, but the concentration is real either way. A VC-funded founder often has a smaller ownership percentage with a shot at a large exit, plus a salary the company can afford, and the equity is illiquid and success is close to binary. A bootstrapped founder usually owns much more of a company that may never have a big liquidity event, and the business often doubles as their main income and their retirement plan. Both have most of their net worth and their cash flow tied to one company. The lesson is the same: keep some money and safety outside the business so a rough patch does not touch your family's basics. Zerodha Varsity's personal finance module and Housel's writing are useful, stage-agnostic reads. This is general education, not advice, so match it to how your own company is funded.
A curated summary to orient you, not advice. The resources below are the real value.