This is actually how Amateur Motocross in the US works. It's really only for the upper echelon, sponsored riders on pro-affiliated teams as basically a development rider. But you sign a thing saying anyone can purchase the bike for 2x MSRP, so there is less incentive to dump money into an amateur bike and helps keep them closer to what a normal person can afford. Someone can feasibly get a $45k bike for under $20k. It's a nice system, you can spend yourself into oblivion if you like, but someone can take you to the cleaners in that investment later.