Legend has it (whether true or not) that, after Zheng He’s voyages were shut down, it was made a capital offense to build a ship with more than four masts.*
If I were Norm Augustine, I would suggest that NASA be encouraged to innovate by being forbidden to develop a vehicle with more capability than the biggest existing Atlas V. This would finally force them to stop wasting money on the heavy-lift fetish, and get on with the business of developing a cost-effective (and scalable) in-space transportation infrastructure. If they really want to continue to indulge in this economically irrational behavior, let them do it with their own money, or find some crazy investor, instead of continuing to screw the taxpayers.
*It was not the size restriction of the ships that prevented the Chinese from being a naval power. The Portuguese and Spanish conquered the New World with much smaller ones.