Thing with investor money is that after a while the investors start asking where their dividends are at. If you put all that money toward building features nobody asked for, you're in for a rough time.
By then, a new fad will come in and you can just pivot to it.
We went from "engagement" (with no concrete plans to monetize said engagement), through a brief period of "blockchain" and now finally AI.
Google and Meta have made billions monetizing said engagement