There is one problem with this service offering (and it isn't insurmountable). Put yourself in the position of a founder who just spent the last 12-18+ months building your startup. Would you then be willing to hand over the reigns to someone else or to some firm to do the launching for you? Especially when the launch is pretty much the one and only chance the company has to get off the ground? Outsourcing really only makes sense when you can transfer the risk in a way that mitigates it. Here it feels like you would be increasing risk of failure if for no other reason that the launch firm has less to lose if you fail than you would.
