And thinking any single instance can sway the entire fediverse, whether they're "leaders" or not is naive. You'd need to buy the top 100 instances at once to force any actual change in the fediverse and those top 100 were more than likely formed to avoid consolidation like that. You're worried about something that is so insanely difficult to happen and would have such a low ROI compared to Instagram and acquisitions like it. It's literally being shown that it's cheaper for a corporation to create its own. That's what Threads is.