Wouldn't other hardware vendors be more interested in supporting PostgreSQL now? Before the acquisition, if you bought a big HP database server, HP had no reason to care which database software you ran on it. Now, HP would prefer that you not be directing your software-purchase money to one of HP's competitors.
Because Oracle and HP are already tight partners and analysts refer to them as essentially one entity against IBM. Plenty of people expect the Sun hardware line to die or get sold to HP, while Oracle keeps the software line.
