Look at the migration off twitter. Can’t we migrate to another platform already?
A business will do everything to stay profitable. That is the purpose of a business.
Any alternative to Reddit that gain some popularity is doomed to meet the same problems of scalability, infrastructure costs, and content moderation. Those things are not free, they cost money, therefore will be run by a business, doing business, trying to stay profitable, and will become "user hostile" once it is not profitable anymore.
This is the fate of any successful centralized social network.