The Fed has been on a money-printing spree since 2008 [0]. The idea was that it would create jobs and stimulate economic activity. In reality, it lowered the bar for things considered investable, so the Ivy-educated VCs were trying to tap into that stream of cheap money, while paying themselves handsomely. Either get acquired (using cheap debt that will also be used to pay the acquiring execs) or IPOed (using the excess money from the public). Profitability was out of question for at least a decade.
[0] https://tradingeconomics.com/united-states/money-supply-m0