fb charging to promote

what about a social business site or financial site im always thinking if a newer social media platform could come out and overtake fb
and make fb do what myspace did

I think LinkedIn has the social media business sector covered, however if a new trend changes peoples mindsets so they do not automatically go to Facebook a new social platform could push their way in.

I know a few people who do not have fb's and have LinkedIn I went and joined im not saying its not usable and gets the job done
but I found it unappealing and never went back also lately I have found fewer and fewer people who use it or have even heard of it
just my opinion theres room for growth I think