Isn't DMCA 1201 the problem here? It's the same law John Deere beats hackers, crackers and tinkerers over the head with. They put a token, flimsy digital lock on their equipment so any replacement must be blessed and ordained by JD itself to work. If you defeat that lock, or tell someone else how to defeat that lock, you're on the hook for fucking prison time or 500.000 bucks on your first offense. I agree with the spirit of your comment, when I purchase a thing the manufacturer can go fuck itself. But right now governments around the world (other countries have their equivalents based on the WIPO internet treaties) put all their legal weight behind this business model.