QA was a thing back when console games released in final forms and couldn't be updated. Nowadays, its a function that is outdated and pointless. All companies have to do is do closed betas or alphas and utilize tons of players to do the QA work for free instead of being paid. At most all you'd want is a small pool of internal testers but like in the past, its an underpaid, overworked, kind of job.
I remember a mag did an interview with one over a decade back when everyone wanted to be a game tester. The guy wouldn't give his name/etc but he basically dispelled all the myths around the job by stating how its actually like. Really made a lot of folks realize it kinda sucks being forced to play games all day long.