The fact is they have enough money to have Scrooge McDuck cash vaults AND ALSO invest a shitload of money.
History also shows us that sooner or later, unbounded wealth disparity ends poorly for the wealthy. I hope we can find a way forward without that "solution" happening here.
You can have big business without robber barons. I'm not sure that exploitation is a necessity to produce things like chat bots, even really good chatbots. Pretending that these people are not hoarding wealth is not really going to answer the question, though.