> can't pick winners.
Mayoshi Son isn't playing the VC game like most traditional VC funds. He's operating on a massive scale and his LPs are sovereign wealth funds, who can have other geo-political priorities than pure profit.
Some people don't know that the usual VC game is often still be profitable for the VC even if their fund isn't profitable. VCs are investing the money of their LPs (Limited Partners), who are usually very large institutional investors with billions under management (think state pension funds, Harvard endowment). Most of the LP's funds are invested in a diversified blend of safer, lower-return vehicles but they take up to 5% and invest it in high-risk, high-return things like venture capital and hedge funds. But they spread it across a dozen or more firms with different strategies.
So each VC is playing a portfolio bets and their LPs are playing a portfolio of porfolios. The LPs just need one of their 12+ VC funds to be a lead investor on a unicorn win. This math usually works out in their favor (there's now >50 years of data). VC funds charge their LPs a yearly management fee of a few percent of the invested capital - whether the fund makes money or not. Over the 10 year life of a fund, this adds up and covers the VCs overhead and very generous salaries - usually >$500K at larger firms. In the VC's view, $500K/yr isn't getting long-term "rich" but it'll pay for a pretty lux life. Even with the VC taking out fees, the LP's math still works thanks to only needing one VC firm to win and if one or two more of their VC funds just return 2x or 3x. It maths up even better.
When your personal worst-case downside is $500K/yr minimum with substantial upside, it's not a bad gig. However, these VC types are generally top-of-class Ivy League grads, who are clearly very sharp and ultra high-potential - the type who'd expect $500K earning opptys on Wall Street, consulting, investment banking, etc.