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.
And, while it's at it, twitter could provide some kind of AI analysis of his followers to find the ones who are the most positive and have said the most positive things about Kanye.
Hell, they could even advertise they're doing that. Imagine being a rabid fan and learning that if you say lots of nice things about Kanye all over twitter that it'll bring you to his attention and he'll start personally replying to your tweets! Oh the algorithmic cult of personality...
That's what I want to see, and I'm willing to code it, just not now.
P.S. I like how my grand parent comment had -1 score before you replied but is now recovering well.
FWIW, it's easy to read that as a reddit-esque throwaway oneliner, which HN doesn't really encourage, rather than serious commentary about social media optimization for a musician. When I have a comment like that, and I do occasionally, I generally thicken it out a bit to signal "No, wait, actual thought happened." (An example: https://news.ycombinator.com/item?id=10177005 was originally just the first two sentences, which taken alone read like middlebrow dismissal, so I added a bit of supporting detail.)
Ableton have built this: https://blend.io/
Note the remixes competitions listed further down the page. AFAIK it doesn't have much traction, although I think their execution was very good.
There have been quite a few online collaboration products built into sequencers. Rocket Network back in 2000: http://www.1000tracks.ru/remembering-rocket-network/
