Yes, i'm agree with you. What i tried to say was that, here in my country, Oracle support is very extended in the largest companies of the country, and those companies trusts that Oracle is a highly scalable and robust database, what is absolutely true, but they think that PostgreSQL is something like a "mini database" for small purposes like small web apps or personal desktop applications just because it's free, but i know that PostgreSQL is capable to be scalable and robust as Oracle or related databases, but i didn't have arguments to say to some software chief in a company "Hey, PostgreSQL is also capable of support a lot of TPS and work in a production environment with a lot of users (if the server is well configured and there are reasonable hardware resources)", but you're right about what you said.
Regards.