Feature parity with Amazon Firebase?

Let me assess this, with the tip of my napkin:

1. linkedin 'firebase' + amazon (current employer) -> 695 people.

2. 10% of above = 70 FTE

3. They started (googled): They founded Firebase as a separate company in September 2011 and it launched to the public in April 2012.

1+2+3 = It's impossible you will have feature parity in next 10 years.

BUT it's possible you can achieve pareto parity, leaving off the table most complicated 20%. Good luck :)