The irony of it all is that I have been regularly attending meetings in Quebec City, Montreal, and Hull and have found that everybody leaves a gratuity in the restaurants. These are local people, so I know that the attitude displayed in PV and really noted in Florida is actually foreign to their own way of doing things at home.
That being said, much of it may have something to do with the resentment toward cost of the meals and beverages in PV and in Florida verses that paid back home. Food costs in Canada (normally 25-35 %) and minimum wages that average 40-55% of a restaurants costs still have a total price per person that equals or may even be less than what we are charged in these tourist places. There was an article a few ago that tackled this subject and the idea that restaurants/bars in Florida and Mexico (strangely it did not include Cuba, Dominican Republic, etc), who are dumping on those French Canadians who don't tip (and who believe its the owners job to pay his staff appropriately,) questioned who really was ripping off who?
Ambition is a poor excuse for not having enough sense to be lazy.