Yeah I wouldn't be surprised if it's canceled outright. The whole thing seemed like nothing more than publicity stunt.
Of course it's a publicity stunt. It was at best a sparring session for giggles. They will still do it. It hurts nobody, entertains some and lets you harken back to the days of yore.
When the fight was briefly talked about in the late 90s-early 00s it would have been a brutal/hilarious glass jaw shattering of epic proportions. Roy never went near any big punching heavyweights for a reason.
In their prime Tyson would consume Roy. Now these guys are in their 50s and nobody wants to risk death. That would hurt boxing real bad.