I think they can get away with it seeing as they've sold out Madison Square Garden previously.
I've put aside my reservations** and gone for an aisle seat at the side.
** at their Brixton Academy gig last time, someone who'd clearly had too many two-pint glasses of lager came pinwheeling out of the crowd just outside of my field of view, and thanks to the surrounding commotion I only just noticed he was in the open stages of sicking it all up slightly too late
If I was the dedicated Rush fan in say Detroit, San Antonio or Montreal and had already shelled out my $$$ for a gig in Chicago, Fort Worth or Toronto, I'd probably be using a stronger word than "silly"
I'm not saying it's a massive money-making exercise, but here's The Alex Lifeson R50 gear collection on reverb.com:
https://reverb.com/shop/the-official-lerxst-amplification-reverb-shop