Hard To Do !!!!

I'm not a very old dog hunter but both my grandpas have told me the way things used to be and I have respect for the old dog men who used their to make a living. They both have passed on so I can't ask them this question.
What do you think are the biggest contributing factors to the decline of dog lines besides money? Obviously most people dog hunt more for recreation now than to survive so I think that plays a part in people not culling as hard ( a dry run doesn't mean you go hungry nowadays ). But did the stock laws or fence laws and private property enforcement play a big roll in these old dog men disappearing. Hunting with dogs was a way of life for thousands of years and now it seems to be a dieting art.