this is extremely wrong. bluesky is a benefit corp. here's the first sentence of the wikipedia page describing benefit corps: "a benefit corporation is a type of for-profit corporate entity whose goals include making a positive impact on society"
mastodon is nonprofit yeah, and so is framasoft, who's behind peertube.
being a social media org that is nonprofit matters, but in that framework cashflow, funding sources and runway matters even more
Bluesky is a Public Benefit Corporation, but that doesn’t mean they’re a non-profit like Mastodon. They have a social benefit in their company charter, but they’re still a for-profit corporation that has raised $8 million in professional funding.
It's also a disadvantage, of course, from the financial side of things.
For-profit companies add ads into their social media products as soon as they can. They generate $$$ from this, and use that to further expand in ways not-for-profit companies simply cannot.