EDIT: Yes, I understand the math of (ensemble-averaged) expected values. My point is that such a calculation (for a high variance distribution) is useless/pointless/stupid/<adjective of choice> (basically a bad model) for anyone for whom their AirBnB investment is more than a small/marginal part of their portfolio. In particular, it’s a dangerously misleading number to anyone who has a large fraction of their personal wealth invested in AirBnB (including employees & founders, or potential retail investors who might invest directly in the company at IPO, rather than through index funds)
Refer the St. Petersburg paradox.