Software start ups are all about that 0 cost replication of software. One webserver spawns millions of threads for free. Start ups crack under the pressure of real world costs. Like sure anyone can make a website where users send tweets to each other. But if you have to spend billions of dollars constructing stadiums so Swifties can have an ex-ticket master experience... That's a hard sell to the software guys.
That's the thing. Everyone hates Ticketmaster... but forgets that the venues and even many high profile artists could easily cancel their contracts with Ticketmaster. Ticketmaster takes the blame, rakes in the cash and distributes the cash to venues and artists. Everyone in the industry is complicit.
On top of that, I 'member the times here in Germany before the big gun Eventim took over, getting tickets used to be a clusterfuck before as your average 1000 seats venue just can't be expected to build a system that doesn't collapse under (often literally) hundreds of thousands to millions of fans.
The fix would be legislation, but given the amount of money in live events... it just won't happen.
$10000+ for a ticket that originally costs around 2k should be illegal. Most of these tickets will go unsold I'm sure.
Related:
Spotify will start reserving concert tickets for fans