Problem is that filming a movie can be done relatively quickly, say 20 weeks or so, producing an original game takes much longer, so the games tend to be made by massive publishers like EA, because they have to be done really quickly to catch the hype.
There's no excuse for old movies fathering crud games, that's why Res Dogs dissapointed me so much.
What is most annoying to me is that these licence games cost the same as any other game usually, the only exception is when there's so many of them gonna be sold (like PotC3) that they buy in bulk and sell cheaper - but mostly these games that take about half the time to produce cost the same as genuine games. Take the likes Oblivion as an example of a next gen game that is worth the money, it's huge, there's dozens of hours of gameplay and is really open ended - I don't mind spending £40 on Oblivion even though I got it for £15 - I had to spend £30 to get that pirate game for my son though, which he'll complete in 1 evening then trade in for some ridiculous pittance. Oblivion is a next gen game, PotC3, Spidey3, well they have next gen graphics and that's about it IMO.
If publishers had souls, they'd give us the movie along with the game, like £30 for the DVD and game in a nice box set - I think a lot of people use consoles to watch DVD's anyway, it would be great to convince a kid to wait and get the cool double set, rather than spending £40 on the game, then £15 on the DVD, then £20 on the extended DVD!. If publishers want to combat piracy, this would be more effective than customs folk trawling car boot sales, as if anyone has trouble getting pirate movies these days!.