I'm peripherally aware of someone who is one or two orders of magnitude smaller than Kayne presently doing this. I believe the vernacular is "killing it."
(Think of the economics for a touring band which can sell out a 100 seat theatre. The approximate lifestyle is "They plow 80% of their meagre revenues into the costs of producing music, make McDonalds wages, and live in a van." Now, give that band the ability to tweet for two hours, glad hand some fans, and make $10k with no venue cut and no label cut. The specific example I heard was "DM fan123: Hey Dave. Enjoyed seeing you at the last 5 concerts. Got a VIP event coming up Thursday: 12 people, live in studio with us, light drinks to follow. Thought you'd want to know. Tix & details: linkylink. Hope to see you there.")
P.S. Before anyone on says "Wait, Patrick, the economics do not make 2 hours of Kayne's time affordable on the budget of upper middle class Americans unless he is sharded between so many people to not even have the pretense of interacting with all of them" think less "movie tickets" as a comparable and more "season tickets to an NFL team" or "a set of golf clubs" or "a cruise around Europe" or any of the host of big-ticket items which upper middle class Americans actually do purchase frequently when given the chance.