This may be fairly well justified. When reading about successful entrepreneurs, I always try to figure out what the genesis of their idea is. Typically they seem to have industry domain knowledge before they start a company and not the other way around.
It might be that learning about a new industry is the best path to riches, but my guess would be that you're best off doing focused research on that industry for a while first (ideas: get a job in it, do consulting for it, go to industry conferences, read books, read industry forums and blogs).
It might be that learning about a new industry is the best path to riches, but my guess would be that you're best off doing focused research on that industry for a while first (ideas: get a job in it, do consulting for it, go to industry conferences, read books, read industry forums and blogs).