I don't see a reason why everyone should adopt the same model. Especially as private show is still private show. I haven't called for sex payphones or paid for cams or that much even watched those (for free), but if I would pay for cams, I would pay to get personal experience. Of course that doesn't apply to everyone, but as long there is a big enough customer segment who wants personal experience, it is of course good to offer services to that segment, tailored to that segment's needs.
You know, for example in restaurant business there are shit loads of models from fast food (like McDonald's) to hot dog stands and to restaurants with sophisticated menus and entertainment. Not that many suggest that all restaurants should be like McDonald's.
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