HelloEven hotels can cancel the reservations you make, not only Airbnb hosts.
So that is a risk that everybody has to take.
I think the important thing here is that you demonstrate to the Canadian authorities that you have made the effort to come out with a quarantine plan.
Shxt happens, and they cannot fault you for circumstances outside your control. If they choose to exempt you from quarantine, then you dun even need to worry about this any further.
But if they do not exempt you, well I read of cases whereby people with hotel reservations for quarantine were canceled at the last minute when they arrived in Canada because the hotels were overbooked. What happens is that the Canadian authorities will move you to an undisclosed location where you will serve your 2 weeks quarantine. The good thing is, you will not need to pay a single cent if you are housed in a quarantine facility by the Canadian authorities.
May I ask what was your quarantine plan in the end?
I totally agree that booking for 14 days without knowing if you actually need it is a waste of money. Trying to figure out what is the best way to come out with a quarantine plan without spending thousands of dollars.
I only needed a stay for a maximum of 7 days, then I need to be heading elsewhere - that's my original plan if I don't have to quarantine + Negative covid test. but of course, if I get a positive result that 14-day quarantine will go as planned.