Expedia is their travel sponsor this season.
According to this, they have more sponsors this season than any previous one:
http://mediaincanada.com/2019/06/19/...-for-sponsors/
It's also the most-watched show in Canada during the summer, so I don't think it's in any danger of cancellation. They might decide to stay in Canada based on what the sponsors are looking to promote.
The thing I always found odd was when they did the international trips for only one leg at a time, then fly back to Canada. I believe they did that because of the Air Canada sponsorship and they only flew AC routes. Now, that they're not tied to that, they should leave the country for a few more legs at a time to cut down the costs. It's not like domestic travel is entirely cheap in Canada.