Speaking to TMZ Live, the UFC promoter and president said a Zuckerberg vs Musk fight would even eclipse the revenue and viewership amassed by a 2017 boxing spectacle between Floyd Mayweather and Conor McGregor, which 50 million people watched in the US alone. "There's no limit on what this thing can make," said White, who revealed he spoke to the pair "last night". "Both guys are absolutely dead serious about this." Musk, 51, appeared to light the fire under Zuckerberg's belly by saying he was "up for a cage match if he is". He tweeted the challenge in response to a report that his rival's Meta company is plotting its own take on Twitter, widely reported to be an Instagram spin-off called Threads.