Scarcity economy to ubiquity economy

Here are 2 illustrations that show how I am thinking of this. Traditionally, we had to charge music 'users' to buy a record, visit a concert etc, because the space (or the unit run) was limited - we put the tollbooth right at the entrance, and everyone that wants in must pay. In a digital economy, we can't really do it that way any longer - space (unit run) is UNLIMITED and we therefore can't put the toll-booth (i.e. the cash register) right at the gate; in fact, there are few gates left to set up at, and the user can find other ways to 'get in'. Therefore, we must TIER the monetizing process, allow free discovery and exposure, then charge a little to get a bit more, and upsell all the way to the top....!