Typically game/media studios run on contractors because of this. You'll be hired for maybe 3-6 months on a repeating contract, so that you can be let go at a moments notice.

For businesses the labour entry point is crowded, wages therefore are low. We find it more common to hire students and pay minimally, use exposure as the negotiating tool.

I know multiple publishers who advocate for that model; outsourcing, not so much. Unless they have a trusted partner, but at that point, they're essentially acting as an arm of the publisher.