Couldn't they decide on a mechanism that does not have the code in there by default, and then electronically deliver it as a module when a customer pays for it?

Couldn't they decide on a mechanism that does not have the code in there by default, and then electronically deliver it as a module when a customer pays for it? Maybe the problem is harder than that, but I doubt there is no solution. It's not a new problem, as we've seen with John Deere already.