The inimitable Chris Hecker ranted at GDC this year (Chris worked on Spore but is now indie). His rant, titled “Please Finish Your Game”, addresses the issue of development time in the mainstream and indie communities. Specifically, he asks developers to pursue good ideas to their “logical and aesthetic extent”.
Chris elaborates on his rant here, and has added an email exchange he had with cactus about it afterwards (cactus is featured prominently in the rant).