People who are constantly looking for the opportunity to do something new are also people who are not going to be helped by having job titles - job titles create expectations of specialization and focus which don't map really well to creating the best possible experience for your customers.
Gabe NewellIf I buy a game on Steam and I'm running it on Windows, I can go to one of the Steam machines and already have the game. So you benefit as a developer; you benefit as a consumer in having the PC experience extended in the living room.
Gabe NewellAbout half the people at Valve have run their own companies, so they always have the option not just to take a job at another game company, but to go start their own company. The question you always have to answer is, 'How are we making these people more valuable than they would be elsewhere?'
Gabe NewellI remember back in the early days of Microsoft that from the day that you decided that you were just going to put out an ad to a customer - and all you were usually able to tell them was that a new product was available - it was about nine months before you could actually reach the first customer.
Gabe Newell