A common theme I heard from internal sources was that they had serious issues with software quality because nobody wanted to do the difficult work of fixing bug

A common theme I heard from internal sources was that they had serious issues with software quality because nobody wanted to do the difficult work of fixing bugs, addressing security vulnerabilities, etc. As a result someone eventually had to be pressured into doing it, but now they weren't really doing what they were passionate about and they'd catch criticism for not being Passionate or doing Highly Impactful Work. If nobody fixes the security holes in Steam's overlay sandbox and protocol handler, every single person with Steam installed gets a crypto-locker installed. The old Valve model didn't really have incentives to encourage people to do the hard work necessary to achieve those fixes, especially if that hard work was interfering with other people's fun.