Offer screen replacements.
Instead of expecting users to shell out another $500 for a new headset, offers one time free, minimum, screen replacement regardless of how it was damaged. Then after that, offer screen replacements for a maximum $80. Now you have a wider market to profit from AND you maintain control of who is repairing the system, increasing profits even further.
By doing so you prevent LOSS OF PROFITS and from third parties cloning the system.