instead of hiring engineers to rework the systems into something more sane, they are just like FUCK IT, It's to expensive to hire a couple of engineers... lets hire 1000 unskilled people righto out of school and brute force it instead.

That, and the gaming industry is notoriously a horrible place to work, so most of the good engineers are already making better money for less stress elsewhere and aren't going to jump at the opportunity to optimize the spaghetti code a gaggle of retards made under crunch time conditions.