The tech founder liquidating his holdings to solve homelessness may or may not be a good idea, but it is not a bad idea because it would suck resources dedicated to tech out of the economy. He’d sell his shares to other people, who now own the tech stream of income, and then take their money and use it to solve homelessness. The only possible economic downside is a bit of inflation as the implied velocity of money goes up slightly since most capital owners spend a very small portion of their wealth each year, while he presumably would be spending it faster. But a 20 billion or even 50 billion one time spend in terms of that is not even a rounding error to the total economy.
The tech founder liquidating his holdings to solve homelessness may or may not be a good idea, but it is not a bad idea because it would suck resources dedicated to tech out of the economy. He’d sell his shares to other people, who now own the tech stream of income, and then take their money and use it to solve homelessness. The only possible economic downside is a bit of inflation as the implied velocity of money goes up slightly since most capital owners spend a very small portion of their wealth each year, while he presumably would be spending it faster. But a 20 billion or even 50 billion one time spend in terms of that is not even a rounding error to the total economy.