A recent GamePro article sums up a lesson that developers and publishers have been slowly learning over the last few years: gamers don't want as much from games as they say they do
"Conventional gaming wisdom thus far has been 'bigger, better, MORE!' It's something affirmed by the vocal minority on forums, and by the vast majority of critics that praise games for ambition and scale. The problem is, in reality its almost completely wrong. ... How do we know this? Because an increasing number of games incorporate telemetry systems that track our every action. They measure the time we play, they watch where we get stuck, and they broadcast our behavior back to the people that make the games so they can tune the experience accordingly. Every studio I've spoken to that does this, to a fault, says that many of the games they've released are far too big and far too hard for most players' behavior. As a general rule, less than five percent of a game's audience plays a title through to completion. I've had several studios tell me that their general observation is that 'more than 90 percent' of a game's audience will play it for 'just four or five hours.'"