Unfortunately the export of water will only benefit the megacorporations that already has control like Nestle.
It's difficult to imagine Canadians who are already experiencing localized and frequent drought conditions to export what limited supply we have.
One method that might encourage Canadians to consider exporting water is an agreement that ALL profits will be shared to low and middle income class Canadians as we all know that capitalistic systems are highly unsustainable and are immensely toxic for anyone involved.