Well at least one possible reason is that for live events, the company that has an effective monopoly is Live Nation. And they also own at least one of the platforms where scalpers sell their tickets; Ticketmaster.
I also imagine that as an event promoter, being able to say some variation of "Another sold out show", or "Tickets sold out within seconds" creates pressure for buying early for all future events.
It also takes active planned work to implement these solutions. And if they have a monopoly, they have no incentive to do that work.
Are you by any chance talking about Mirage online (and it’s many other servers)?
I remember loving that game (or the Jerrath Online server anyways) and being amazed by it. I knew enough about computers to know it was programmed in VB 6, but not enough to actually code.
But the desire to eventually make something like it definitely had to do with my interest in coding later on.
I think the parent comment was referencing that, at least in the US, dentistry is treated differently in many ways. For example, it’s a different health insurance with its separe premiums and limits, and you’ll never find a dentist in a hospital; instead they have their own offices.