Maybe, just maybe, let the consumer decide? Hmm? Makes sense? Market intelligence ring any bells? Becuz, if it wouldn't work like you predict it wouldn't, nobody will bother to do it, then Samsung wouldn't worry about it, would it? Market it as a "best with G. Note 4". So, why the limits? Not everyone has a goddamn Note 4, but A LOT would want an affordable VR glasses. Dunno, maybe Samsung doesn't like profit and maximum market exposure... or maybe they're just dumb?
Try and keep that in mind for yourself. In the future when other big players enter this market, you'll see how possible it would be for Samsung to open the devkit to the wild. Royalty free.