Schumpeter talked about this long before we suddenly discovered in the current contemporary era that there's a tendency to “oligopolize” in new industries, so we get all concerned about that. All I can remind everybody of is what Schumpeter said: There is no such thing as a permanent monopoly. All monopolies break down if you allow entry and you reduce barriers to entry. Some smart entrepreneur out there will figure out a way to go around the oligopolist or the monopolist because they're making so much money.
That's why “creative destruction” comes from these innovative attempts to smash the existing market power of existing large players. I'm not worried about AI dominating technology. I'm not worried about Meta. Competitors will emerge. Apple is already losing market share on their phones. Competition will address this if it's allowed to.