It’s not just that. Being flush with cash causes engineering bloat. You start chasing blue sky trendy ideas (AirBnb was reportedly doing chatbot for a while, ala Volara.) or chasing more and marginal gains on existing products. It’s inevitable, when money is cheap.
The vulnerabilities of this business model laid bare. If you're a business like Airbnb you have to be global, otherwise a competitor will be and they'll eat you up. You need solid in country representation otherwise competitors with a deeper regional focus (even smaller companies) will have better offerings and eat your market share. It seems being global and local is possible with 13,000 employees.... except when tourism crashes 90+%.