So if I owned a shop, then it would be OK for people to come and help themselves from the shelves, yes? Or is it only us farmers who are being selfish by running a business for profit? Where's this 'power' thing coming from? Maybe I'm thick, but I just can't get my head round it. Have you been upset by a farmer in the past, or has his bull chased you about a bit?
The only other explanation I can think of is that you're one of those detestable, yellow-waterproofed 'Ramblers' who are under the impression that the whole country is yours to trample over at will, irrespective of its ownership. I suspect a 'La propriété, c'est le vol' undercurrent at work here.