Charging for installing
PostgreSQL is not the same as charging for PostgreSQL.
Bottom line: you charge for services you
provide not for software that other people provide.
That's just really not true. There is nothing that
prohibits you from selling Postgresql. I mean, it's not a
great business model because you can get it for free, but
there's nothing that stops you from doing it.
Quoting Adrian Klaver in this thread from about eight hours ago:
"You cannot (legitimately) charge the pharmacist for any part
PostgresQL."
That was my thought actually. By legitimate I meant in good conscience as opposed to any comment on the legality