To me, it has nothing to do with the idea that indie games can be arty; I much prefer VVVVVV to Braid, despite the fact that one is just a solid platformer, while the other one is supposed to be this great artistic statement -- no wait, it's because of that. Braid is a pretty mediocre platformer with an arty bent, while VVVVVV is my personal game of the year for 2010.
What I think the indie developers can teach the majors is that customer service and fair pricing are both highly important. The indie devs take care of their customers, they don't shove in annoying DRM that only hurts the paying customers, they listen to feedback, and they engage the community. They also tend to price things low, as low as $2.50 in some cases, because they realize they are in competition with one another, not a huge oligopoly[footnote]Which is exactly what the majors have. How they haven't been investigated for price fixing, I will never know.[/footnote]. Had VVVVVV been published by a major studio, even in this day and age it would have been at least $20, instead of $5. Had Breath of Death VII and Cthulu Saves the World been released by a major studio, they would have been hand held games selling for $30 a piece, instead of $2.50 for a two pack. Indie developers actually have a good idea of what their product is worth, and that's something huge that the majors could learn from them.