You should have an option for "Devs, Consumers, and Media", as I blame all three.
Everyone has played their part in the decline of quality in widely-available products, not just games. Movies, TV, games, music - all are suffering heavily from lack of quality control.
For example, for every good TV show with actual writing such as the Office, House, etc etc, you have about ten or twenty reality or talk shows, all of which require as much "writing" as a 2nd grader's book report on Run, Spot, Run. This points to good shows being the exception, and mindless 'entertainment' being the rule.
This comes as a result of people allowing this, just turning on the TV and letting it run as the crap shows come on, being too lazy to change the channel and cause the networks to give a second thought before pushing more easy-to-produce, no-need-to-write bullshit upon us all.