I like when there are alternatives, and I think it would be very sad if we'd see the same Adobe near-monopoly for raw conversion as there is for photo editing (ie Photoshop). It's not healthy for the industry or for users.
I don't know about the economy side, but it could be the case that Phase One is actually making money from C1, right. And then there's nothing to worry about. If they only make C1 to support their Phase One backs and actually lose money on the product itself I'd be a bit worried.