Cars are sold for a profit (regardless of how thin it is). If they want to use this business model, they would have to sell a loaded vehicle at a loss, and hope that customers would then pay for the features at a cost point to make the sale eventually profitable for the manufacturers.
Then there is the used vehicle, sure I might sign an agreement that says I will pay for whatever features I want on a rental basis, but I still bought the car, I can sell the car to anyone I want, and there is no way that the manufacturer can enforce any contract on the second owner, which means he could in theory use alternate methods of reactivating all the disabled options...
Hell, in theory, once I own the car I could just make the features work, this is not a lease, (unless they restrict the rental options to leases only), at most they could void the warranty.. who knows.