I think the Blue Jays are about to start a run of highly competitive playoff caliber teams for a long while. That place should see fuller crowds due to that and the fact that it's the cheapest sporting event in town helps too.
The Rogers aren't selling the Blue Jays so I don't believe they are going to sell the stadium they play in, especially when they got it for so cheap themselves. Any losses they've sustained since owning it could easily be overcome because they can absorb it for as long as they want to, they've said so themselves.
The first winning team in Toronto is going to have a packed house, this city is starving for a competitor, and I think the most likely team to do it first is the Blue Jays because they clearly want to win more than anything.