What Gives NFS??

I've been wondering lately. Game designers and Developers create games to entertain us, but at the same time, require end users to purchase the final and complete version upon release date? Am I correct in saying that?

What happens once a game has been sold? Improvements? Updates? Extra features? New cars and locations? After sales service?

I have played almost every single Need for Speed available in my country. Road & Tracks: The Need For Speed. Loved the viper.. NFS2, NFS 3 HP, NFS HS/4, NFS PU/P2k(5), NFS HP2(6), NFS UG/7,NFSUG2(8), NFS MW(9), NFS CBN(10), NFS PS(11), NFS UC(12) ..... wow there are a hell of a lot of em. Point is we have all spent a small fortune to own and play these games, then an issue arises not once or twice but 3 times and no one will even respond. Poor show EA NFS