A service that enables domain experts to give video advice to paying users is not an idea you're going to be the only one who's ever thought about. So it's a bi

A service that enables domain experts to give video advice to paying users is not an idea you're going to be the only one who's ever thought about. So it's a bit iffy to claim that someone copied your start-up. Unless you're talking about specific methods of defining or solving problems in your execution of the concept, which doesn't seem to me to have been the case here. I could be wrong, naturally.