That's what you think. But what does Gabe think?
"So we think we're super productive and kind of badass at making TF2 content, but even at this early stage, we cannot compete with our own customers in the creation of content for this environment. The only company we've ever met that kind of kicks our ass is our customers."
Gabe has said that the community is the best at creating content. Greenlight was a failure but he still wants to allow groups set up their own storefronts (like a NeoGAF store). Visual content is created by users for stuff like TF2 and Dota 2 now. I think a lot of people at Valve were left redundant because of this.