Honestly (for someone also working with audio) these team descriptions sound like they would idle most of the time.
My usual yardstick is Apollo programme development team size: about 600 developers. Relatively few tasks are substantially more challenging than writing code that would get people to the Moon and back. There have to be some that are as hard or harder naturally. But when you see a commercial company that has an order of magnitude or two more devs than that, using modern tooling and conveniences, it's hard to fathom.
My usual yardstick is Apollo programme development team size: about 600 developers. Relatively few tasks are substantially more challenging than writing code that would get people to the Moon and back. There have to be some that are as hard or harder naturally. But when you see a commercial company that has an order of magnitude or two more devs than that, using modern tooling and conveniences, it's hard to fathom.