I understand that’s possible, however it is not possible for a company to take away users who care about ethics from the fediverse. And only those people matter, as we are not going for profit. Others can join in if they understand the need to join in.

Well if that’s the case, Fediverse was dead on arrival. But that is not the case. If you use a close sourced client and sign up to a server with bad practices, you cannot use that as an example for the whole Fediverse.