[nradov]

The point of agile is for a team to achieve the maximum possible sustainable velocity. If you're building a custom line-of-business application, a web SaaS, or shrink-wrapped productivity software then you typically want to manage it as an ongoing program with multiple releases spread over many years. So a rational manager won't burn the team out on the current release because she needs to keep the team intact to work on the next release. Whereas with most games there's very little maintenance and enhancement work after the initial release, so it might be economically rational to overwork the team in the short term even if that pace is unsustainable.