They have made it proprietary so that providers like AWS can't build their own service with it, thus eating into PS's income.

Google is big enough to survive open-sourcing Vitess, k8s, angular, etc. Planetscale isn't.

correct. AWS do anti-competitive stuff to us all the time we can't make it any easier for them.

What a convenient excuse

Google, Azure, and AWS already have their highly available PostgreSQL alternatives.

>Kinda ironic that Planetscale built their company on open source Vitess that google built

That Youtube built. I know at the time Youtube was already part of Google but I don't think of Vitess as a Google Stack.