Yes great idea indeed but I think the Zim market for this type of service is still in its infancy. First of all the seller requirements are for companies that are mostly, lets face it, run by 60year old dinosaurs at the top. So good luck getting them to use your platform as they'll have a finall say in what their $100000 businesses do no matter how convenient your solution seems to the young guys at the bottom of the ladder.
Maybe the service should target small to medium enterprises? So that'll mean drastically lowering your registration requirements. Sure it'll take alot of time to recoup your investment (I can only imagine what you paid C2 for development) but in the long run when the economy is running on all fours you'll begin to see the fruits of your labour and have a sizeable chunk of the market share.