Do you think that the time-to-market advantage that using Firebase offers you justifies the (presumably) increased cost when compared to the cost of managing your own infrastructure?
While I like self hosting (was previously a RethinkDB user), from a business perspective, it doesn’t make sense to spend time on operations if it doesn’t give you a competitive advantage. It’s going to be very difficult to outpace a business that only has to focus on development versus one that has to do development and operations.