Good afternoon Tom,
maintenance package is an optional product. The License user will purchase will be perfectly functional and perpetually available to the user even without the package. It is a standard model for software products.
The other part of your comment, CR does and will offer in the future the licensing options for professionals (perpetual, CLI, PGM) , as well as, licensing option for lower price with certain limitation/either on quantity of inputs or time-limited (RC Promo or other alternatives in the future).