People here probably don't remember what the Chinese tried to do in world soccer 10-15 years ago, but essentially, they were embarking on a plan to have the world's #1 most popular soccer league. They did this by promising all of the most elite players in Europe insane amounts of money to sign on to play in the Chinese league. They signed many many huge stars away from England, France, Italy, Spain and Germany. There was a lot of hand-wringing about all of this at the time but two things happened. First, it didn't take too long for everyone to completely forget about those so-called elite players after they left and new stars on the European clubs emerged to replace them. Second, it turns out China was writing checks that they couldn't cover, and those players who left for China were now stuck in a foreign land where they didn't speak the language or know anybody, and they were not getting paid to boot. It ended up hurting the players more than anything. (FWIW, the Saudis are attempting to do the same thing now and are still facing the same issues, but at least their $$$ has been good at least so far, but probably the lessons learned from the China fiasco has made it much more difficult for them to lure big names away from Europe).
Which is all a long way to say that absolutely nobody is irreplaceable. The NIL insanity will probably calm down some - either by BMD's going broke trying to win championships for their favorite teams, or by sanity eventually coming in and the process becoming at least a little more regulated - and in the end, we will carry on rooting for our teams because as college sports fans, it's really only the name on the front of the shirt that matters.
Yeah, I kinda feel a little bad for the UNLV fans because this will likely derail what could have become a special season for them. But they will continue on and there will be some solace for them when they see this starting to happen to other programs around the country. This event is really probably only the first of many just like it to come.