One thing to keep in mind: for a very long time, PostgreSQL was the *only* free ("free as in free speech, not free as
infree beer") DBMS. I told dozens of people to consider PostgreSQL instead of, say, MySQL, for that very reason.
Whicheverfree software licence you preferred, there was no real choice.
Now, it is no longer the case: as you have read here, MySQL is now fully GPL. The concurrency between the two DBMS will
increase.Since MySQL has a licence which is more hacker-friendly (it cannot be turned into a proprietary product),
PostgreSQL,which had (along with techincal strengthes) a big advantage with its licence, is now behind.
