Business plan? No, for most websites, hiding content before registration is usually the biggest -deterrent- to that website, even when they know what's inside in the first place.
I realize we have a lot of really stupid people in the world, but it takes someone -really- special to sign up for a site they know nothing about. That's common knowledge, like not clicking spam mail stuff. So unless we have some doddering old people who don't know what they're doing in the first place or kids younger than...I dunno, seven, it's very likely not gonna happen.