I'd guess way more Canadians are government employees than most jurisdictions which is why. Also lots of industries with no competitive pressure (banks, telco)

a good bit of it is caused by the confluence of vast teritories, with staff travelling a lot, and new technology allowing them to meet in teams remotly, so in fact it is just simpler for everybody to just work from wherever. Look at Canadas demographics, and a long history of remote work, with traveling, courts, DMV offices,medical clinics, and companys with regional teritorys bigger than the average country. Also a the shift to online shopping and banking services and other services has further enabled all sorts of efficiency gains for small business and indivduals ,further proving the distributed/remote model, in a country with low population density. Add in an aging population, with people hightly experienced, but so done with the commute, especialy in winter, but ready to take shifts from a home office, or perhaps these days....while on vacation....and there you have it.