That's a good point, about liquidity. However, not all assets are as illiquid as a stake in a startup; many people have cash, stocks in public companies, etc. A

That's a good point, about liquidity. However, not all assets are as illiquid as a stake in a startup; many people have cash, stocks in public companies, etc. Also, they can plan ahead: 'I'll need around $x next year for taxes'.