That's the whole point of him buying the time slots. Ratings and ad revenue don't matter, all of the "commercials" are promo's for Haymon fighters. He paid for all the ad space in those time slots already. Boss move by Haymon, if it works out.
It matters to Haymon's capital investors. But, over a long period of time. Boxing fans tend to think fight to fight. But there isnt a serious business plan in the world that covers less than 2 years. Taking a planned loss for 1.5-3 years is the norm. But just like elite fighters, elite businesses need to make adjustments. Only time will tell if PBC is able to make the adjustments needed to really be a success.
That's not exactly how it works. If no advertisers are interested, then there is no future. A business can't keep putting products in stores if nobody is buying them, regardless if they have enough product to stock the store for years.
He paid for the space the advertisers would normally take up. Why can't you wrap your head around that? Haymon doesn't care about ad space...it's about creating a brand then getting a huge network deal like the other professional sport leagues have