In my view something doesn't necessarily have to be limited in supply to be scarce, the demand for it makes it scarce. Imagine a scenario where someone is buying up all the newly issued coins, then you effectively have a limited supply too. Programmable money is going to change everything we think we knew about money, for example the concept that inflation is bad is going to go away, if inflation of a tokens benefits all holders of that token then its not bad, inflation in our current economy is bad because it benefits only a few individuals.