Save just giving the game away for free, there seems to just be no pleasing some people. No one's forced to buy the indie bundle and if it manages to unlock Portal 2 early, everyone will get it early as far as I understand. So if you don't want to contribute, don't. You'll still get all the benefits and can be happy that you didn't have to spend anything on a bunch of potentially great indie games. Just keep that in mind the next time you complain about how the AAA industry treats gamers and how there's no innovation happening anymore.