Just put all the damn combat sports on one streaming service.
Seriously, I subscribe to:
Showtime (for boxing)
ESPN+ (for boxing and MMA)
DAZN (for boxing)
BKTV (for bare knuckle boxing)
UFC Fight Pass (for MMA and kickboxing)
On top of that you have live boxing, kickboxing, and MMA events being broadcast or streamed on Fox, FS1, FS2, ESPN, ESPN2, AXS TV, Youtube, etc.
And then, after all that, you still have to pay a separate fee for the major Pay Per View fight events.