EverythingIncredible said:
It's less about games and more about marketing.
Newsflash: It has ALWAYS been about marketing.
Back in the days 12-15 years ago, the market was just drastically different. Games were still a relatively new medium, and the medium had just reached the era where they could take the medium in a new direction (for example the transition from MIDI-based sounds to actual recorded sounds, voices and music, as well as the ability to include cutscenes, and 3D graphics had just been born), which meant that there was plenty of room for experimentation and niche-appeal.
Those times are over. Since internet access went widespread, everyone in general knows about almost every AAA title out there, all the details are being laid bare by previews and reviews that you can read all over the world as long as you have internet access, which has mainstreamed the market. The only people that are left with actual experimentation are Indie-developers with their (in many cases) original ideas, but their games are in pretty much all cases made on a low budget (and before someone mentions Portal 2, i will remind you that it's a sequel to a game that, just like indie games, was made on a low budget). Experimentation in indie-games pay off because they usually have a very low budget, but experimentation in big AAA titles just doesn't pay off.
BioWare hasn't changed much back from their Baldur's Gate-times. The world has changed.