Back in the day, with the Americans, Vulcans, and later Stallions the advantage the upstarts had was that the NFL was on fire. Stadiums were full. Some of the owners even signed NFL players and high draft picks like, Larry Csonka, Hershal Walker, Steve Young. B'ham even enjoyed Joe Cribbs, Matthew Reed, and John Hadl. I remember sitting in Legion Field and it would be sold out.
Don't see that excitement happening again. Too much stuff now on TV and the internet and the NFL can't come close to selling out their own home games. With Sunday Ticket and so much to keep us entertained, it feels like all this XFL talk is another pro football disaster waiting to happen.