I'm not sure (others here, naturally, may be in the know). Having said that, there do seem to be some larger concentrations of them in a few companies. I don't keep up too much with that either, but it seems like EnterpriseDB was in this camp (and logically so).

I do think there are enough companies now that develop PostgreSQL based products (EnterpriseDB, Citus Data, Greenplum, etc) along with the larger PostgreSQL consultancies which would probably raise their hand if they thought one player or another was becoming dominant in some way hostile to the others.

All of this is outside observer speculation, but it's the way I read the tea leaves.

>> Wasn't there in fact an agreement amongst the PostgreSQL contributors that they'd never all go and work for the same company?

At least some of us have that understanding - and looking at where at least the committers work it's fairly well distributed.

> Having said that, there do seem to be some larger concentrations of them in a few companies. I don't keep up too much with that either, but it seems like EnterpriseDB was in this camp (and logically so).

There is some concentration, but if you look at the list of committers (smaller number, I don't have to look up affiliations), they're fairly well distributed across the the larger players (alphabetically 2ndQuadrant, Crunchy Data, EnterpriseDB) and various other orgs with some.