I think what you're trying to say is that just because someone - especially [large company] - tries to improve/integrate popular open projects doesn't mean it's

I think what you're trying to say is that just because someone - especially [large company] - tries to improve/integrate popular open projects doesn't mean it's always EEE. Which I doubt EEE is purposeful the majority of the time initially, even if has the potential to become that later. In the case of google I think this would be a case of "how do we add value to our product to sell" followed by "this feature costs us too much resources to maintain, let's cut it and focus on [new feature]" That being said Postgres is not a good example because AFAIK they're both not a commercial entity (or any registered entity at all?) and they're true FOSS. At the moment they have no commercialization strategy (sponsorships maybe?) and no ability to extinguish anything given their open license and lack of any proprietary services.