Folks who see a Toronto NFL future always fail to understand that it is not a gate driven league - it is a television league. There is no other league like it in the world.
Canadian TV rights for NFL games = 10-15 million a year
Combined ABC/ESPN, CBS, Fox, NBC payment to NFL for rights = Billions
NFL back in the Rozelle days decided that NFL tv revenue would always be split evenly no matter the size of the market. There is going to be huge American tv opposition to a Toronto team, the NFL owners are not going to be keen to give a tv share to a franchise shift that will not improve ratings.
Niagara Region stadium with a Canadian ownership minority might be the closest MLSE gets to NFL participation.
I was in high school when Johnny Bassett offered 1 million each to Csonka, Kickk and Warfield to play for the Toronto Northmen. If I had started holding my breath for American football in TO back then, I would have expired decades ago...