the leafs have crazy ticket prices but I think they're one of the teams that gets more from tv / corporate / merch and so aren't as reliant on ticket sales. again, despite ticket prices being so high.
i think in the long term there is a business case for lowering ticket prices. get a more raucous crowd into the building, which will also show better on tv.
make it easier for people with a casual interest to see the game live and make them more serious fans. make it easier for newcomers and the like to check it out. families with young children. and the reputational benefits of pure fan service; let the many serious lower and middle income fans who can't afford tickets into the building.
grow the fan base. yea leafs have a lot of fans but in the GTA there are plenty of people who don't watch hockey at all or cheer for other teams instead.