Not sure I even understand this question...Some of the most exciting next gen things shown were by indies.
Yeah this conference showed why indies are important. All these studios making money on past projects are now able to put more effort into the engines and now creating stunning imagery on screen that is being showcased at the Sony conference. It is no coincidence that the vast majority of these " indie " games were not your usual Steam 2D pixel sprite type games. But full fledged 3D open world beauties with clever mixtures of genres and ideas.
I think my past thought on what Sony is doing with the indie teams is coming into fruition. My early thought on why Sony was getting in bed so hardcore with indies was because, just like in the PSX days, they were testing the teams talents. Giving them the means to put out a product with all their creative vision behind it and see which teams really had what it took. Then, they swoop in with financial assistance and publishing assistance and marketing assistance for the next titles and see how all that goes.
It will not be long now before Sony brings in many new teams into the WWS umbrella and I highly doubt many indie teams would be against the idea, especially this gen and most especially with the people in charge of Sony atm.