What's the bare minimum you need for an MMA fight?
2 fighters, 1 ref, 3 judges, 2 cut men, 1 doctor, some cameramen. I assume they have more than that on the medical side in case they need to stretcher a fighter out. The fighters are probably going to want at least 1 trainer in their corner too and then there's a commission guy for each fighter to do whatever it is they do there.
You're going to need some production crew too, someone has to tell the fighters when to come to the cage.
Now maybe you cut that down and have judges outside and on monitors and get rid of the commission guys in the cage (but a commission would need to agree), have most of the cameras remote operated and put up with the shit shots you'd get but you still need a fair few people in the room with the fight and it rules out most of the world.
And then you have 14 day isolation when you arrive and then again when you go home in addition to the lack of scheduled flights which would men the UFC would need to charter private planes.
And you have to find someone to sanction it.
It's getting cancelled.