No kidding; if the long term prognosis for BC's climate is even remotely accurate - where we become more and more "California-like" with specifically warmer and wetter winters over the next 50-100 years - I don't think I will be investing in any ski operations any time soon and especially on the coast.
I wonder if ski operations are much of an 'investment' per se, in any case? The biggest company that I knew/know of, Intrawest, is in real estate, and uses(d?) a ski hill to attract property owners.
I know little of business, but I'd imagine, weather considerations aside, that the profit margins on a ski hill are pretty small, so I think that you'd run one as a labour of love of skiing, more than as a profit-driven enterprise.