The house shows only visit mid sized cities. Toronto is a large market, so attracting a larger audience should be expected.
Bigger the city, bigger the audience, but the less they visit a city, less interested the city should be.
Don't get the whole "the less a city gets WWE,the more fans would want to see them when they come" thing. If anything, it should be like the less WWE comes to a city, the less they care. Especially if it's a city that is as big as Toronto is, as close to USA as they are, and rarely gets TV/PPV events anymore, despite the fact that they were apart of many historic moments in wrestlings past. Ever since around 2006 is when WWE really started backing away from Toronto(maybe cause of the Cena-Edge match reaction from fans lol. Next to the ECW crowd, it was the most boos Cena got at the time).
UFC has taken over Toronto and it really shows. Stations everywhere love talking about UFC whenever UFC has events in town, something they USED to do with WWE(not just attitude era, even from like 02-05 they did it alot too). When WM and Summerslam were here, they had an entire section(not page,like an entire 10-20 page section) in the newspapers dedicated to talking bout WWE.
Their a mural for CM Punk on an entire billboard on a building(advertising WWE shows on a tv network in Canada) that's literally like 2-3 min walk away from the Rogers Centre(home of the Toronto Blue Jays).
Orton was on the COVER of main newspapers all around the city after winning at Summerslam! So if that doesn't say that the city loves WWE, I don't know what else does.