While I feel better when Google acquired FB, I still would like the ability to switch away from FireBase (costs, China firewall, etc). I couldn't find something like a 'database abstraction layer' I had with SQL. Thought about writing a store-FireBase interface, then I discovered GraphQL & GraphQL cloud dbs....
FireBase's analytics are very strong though, would be on top of list if I wanted to do something outside GraphQL again.