I'm not sure why he's focused on indies. Budgets for AAA titles are growing to the point that they can't survive even on moderate successes (e.g. Irrational Studios and Bioshock Infinite). I expect between the deep discounts offered now on PC sales and the glut of games, consumers are going to push back more on price. The kind of deals that exist on pc via steam sales and the like don't exist in the console market. I'm not sure the AAA will be able to demand the same price.

There have been a number of indie titles that were released while still in development and use continuing sales to fund development (e.g. Minecraft.) But I think the force behind steams early access will shortly come to an end. A couple titles recently cancelled development and I think in coming months more will quit. Consumers will be turned off to early access when some of their titles go dark while still riddled with bugs and half developed.

My two cents for how to be successful, make something fun to watch. With the growth of twitch streaming, more then ever, games are being judged by watching someone play, rather then reviews or trailers.