> It is not ‘just because’, it’s because there are more people who want to go than there are tickets.

The emphasis is on the last part, i.e. "just because they could". My point is that they should not have been allowed in the first place.

> how do you suggest the tickets be allocated

First come first served. There are usually different price ranges anyway, so the market forces are already at play. I don't understand why we need to have black-market-as-a-service.