Personally, I believe that rockered skis (i mean real rocker, not just a little tip rise) will comprise a big chunk of the market in the next few years, but 50%, I doubt it. Rockered skis are, and will remain, niche skis, even though it is a large niche - soft snow.
My experience on rockers has been positive on ANY soft snow , from dust on crust to cut up soft snow. Camber, however, is far superior for consolidated snow and that is what most eastern skiers ski on all the time and western skiers some of the time. Rocker will work on hardpack but it is less fun. Camber will work on powder but it is less fun. Skiing is about fun , to state to obvious (at least to some of us) and if you have the cash and the space, why not have a couple specialized tools to play with. It's like cooking knives: you COULD dice onions with a paring knife, but I would rather use a nice french knife instead. All this being said, given the choice of one ski for western Canada, I'll take my rockered ski, hands down.
Many of the posts in this thread seem to imply that rockers are "cheater" skis that are employed by the less skilled in order to ski terrain beyond their abilities on conventional skis. While this may, in some cases, be absolutely true, it is equally true that many skilled riders have also adopted (and adapted to) the new ski design. My experience with rocker has been that while one can get away with some sloppy turn initiation and "powerslide" maneuvers , rockered skis have a very low tolerance for poor fore-aft balance and will absolutely respond better to a nice, round carved turn technique than hacking slashed turns. Of course this is pretty subjective, others may have different experiences.