Mr Beast videos do single digit millions in revenue per video, and he operates on razor thin margins re-investing everything. Youtube does $8.5Bn a quarter in revenue. For startups the target is the Youtube exit, not the Mr Beast exit. In fact, whilst Mr Beast is obviously doing a great job and making tonnes of money it's not clear if he even ever could exit. What Mr Beast is doing is incredibly successful, but it's not the silicon valley start up model.