As with everything in life, it's a matter of scale.
It's truly not a problem if some people have maybe 10x more influence than others. It becomes a problem when some people have so much influence that they, alone, can change the trajectory of their country and even sidestep democratic processes. Which is what we're seeing in countries like the US.
citation needed. "so much" is meaningless. power exists to be wielded. the majority of people are ignorant and uncaring so of course a small minority of highly affected and powerful individuals will exercise power.
and in the case of Meta it is not just "morals" or "ethics" but very basic attributes of quality and UX. Instagram fails to load the first time I try to load it on my computer, but it usually comes up after a reload. Uploading photos on Instagram is much more of a hassle (takes much longer) than it is on the unfunded web Mastodon client which is developed by open source fanatics who'd I'd expect to have zero empathy for ordinary users. I like the idea of the Meta Quest 3 but so many things, particularly the social features, are terribly thought out and if you're delighted that something works now there's a good chance it will regress next week.
If Zuck fired his whole front end team in Silicon Valley and hired some good FE people in Minnesota, retired and put a rando in charge I bet he'd be worth 5x as much overnight.
It's truly not a problem if some people have maybe 10x more influence than others. It becomes a problem when some people have so much influence that they, alone, can change the trajectory of their country and even sidestep democratic processes. Which is what we're seeing in countries like the US.