I think corporate instances should be allowed only as hosts for accounts of their own employees. Letting large companies dominate the fediverse kind of diminishes the idea of putting control of social media back into hands of the people. If the companies really wanted to help the fediverse out they should be donating to fediverse projects rather than trying to monopolize it.
My man, you're straight up fighting it up there with one of the largest websites on the internet with vastly more resources and you're delivering. You deserve the praise and encouragement.