A recent study shows that 10 percent of Canadians use hotspots. That rate jumps to 17 percent for the 18 to 34 year old age bracket.
Canadians also say they prefer to pay a flat monthly fee of around $25 rather then by the day or the hour. Only 2 percent thought access should be free. Another recent study amongst Americans showed that the vast majority of Wi-Fi users choose a free hotspot over one that charges for access.
Decima Research did the study but I couldn't find details on its site.