They pioneered it, but they lost because "gig-economy" streaming is better at finding diamonds in the rough. Giant Bomb couldn't find more Vinny's or Dave's no matter how hard it tried (and it did try).
Youtube can pay okay when you hit those 6 figure subs, but it's still not quite enough to pay for a traditional office setup. Not even a small one. Sadly, geting 10 vinnies on one channel doesn't get you 10x Vinny income, it's better to do a setup like Channel Awesome (minus the whole harassment and rebellion of the clients) and manage 10 Vinnies if you had the choice.