That's because in the games industry there is no expectation of a v 2.0 (most games never sell well enough to warrant it) and therefore little concern about man

That's because in the games industry there is no expectation of a v 2.0 (most games never sell well enough to warrant it) and therefore little concern about mantainability or the future. It's hard enough to get the 1.0 release out the door without the studio running out of budget.