there are some differences. movie studios want dvd and blu-ray locked to regions so manufactures have do that. the thing with ISPs is slightly different. of course fair usage policy and net neutrality shit is because of media giants who are againt the freedom on the web as they claim it hurts their bottom line. but ISPs too suffer from excessive usage by their customers (poor network, expensive bandwidth). so they have benefits in supporting FUP and opposing network neutrality. DVD manufacturers have nothing to lose if their players are capable of playing all kinds of media. they get their money at sale time. they do not have to deal with customers after that.