I think that to set it up so that you CAN'T own your own bike, that would detract from the interest.

Maybe we make it so that there is tech inspection after EVERY race?

Maybe you start the season and the tech guy gets the chance to look at your stuff, look inside the motor, and then seals it?

If you break the seal, it needs to be re-teched...

or maybe, just maybe, people will see this for what it is - and race like gentlemen (and ladies) and just race their butts off on a stock bike like prescribed by the rules?