A few years back, Citymapper launched a bus line in london where the route was defined based on the amount of data they had about desired paths from their users that were badly covered by the existing network. https://citymapper.com/news/1800/introducing-the-citymapper-...
As always, it depends on what style you're talking about. For mainstream EDM? Sure I won't fight your figure. But for underground techno (among many others), you're delusional if you think the majority of djs play pre-recorded mixes.
While I agree with the general sentiment of your comment, the specific example you used is not really relevant: MrBeast is not on twitch, and his revenue comes from youtube ads and brand partnerships. He also has 'classic' merch and several companies (burgers, chocolate bars), but he doesn't bring in any money from subscriptions/donations the way twitch streamers or onlyfan creators do.
I didn't follow closely but it looks like the project got canceled, as https://citymapper.com/smartbus returns a 404.