I think we may see new Resident Evil games for a very long time. Just look at Capcom as a company, they have built up huge franchises such as Mega Man and Street Fighter. They know how to make a quick buck, like with Street Fighter, they must be over 10 versions of Street Fighter 2 and every fan will buy these.
When they remade RE1 and RE0 for the Wii, fans still went out and bought them, either to play them or just for their collections.
Capcom will never give up the Resident Evil franchise, they can do what the hell they want, even make Resident Evil 6 based on Barry killing Zombies, fans will buy it lol.
I don't want to sound angry at Capcom, but I very much love the Resident Evil franchise, I grew up with the games and i'd hate to see it get hated each time a new game comes out. Before RE4, the series was in a nice place, after a series of great games on the ps1 and C.V. I thought the series could of ended on C.V or maybe just tie up a few loose ends in a RE on the ps2.
I remember thinking this before RE5 came out, but lets see what RE6 has to offer, sure they will make remakes or ports of the games we've already played the hell out of, but still i'm very interested in what RE6 has to offer. RE5 had a nice story and was paced well, but let's be honest it was RE4 in HD at the end of the day.