Alan Jacobs has some doubts that everyone could make a living like CK:

It would be really gratifying if this model (not unlike the one Cory Doctorow has been using for a few years now in the book trade) works for a lot of people; but I have a suspicion that it will work best for artists and entertainers who have the ability to generate a distinctive aura of shared trust with their audiences. And not everyone has that, even artists and entertainers who are extremely popular.

From The Daily Dish

You know what? Fine, Alan, not everyone currently making their living in the entertainment industry will be successful at this; but this shared trust you speak of is a skill - a talent - that can be honed. This element of trust between the producer and the consumer - a shared bond of common interest - is exactly what the market is missing: when multinational entertainment conglomerates continue to charge the same price for content that has near-zero reproduction cost (digital, for instance, as opposed to the cost of the disc, the shipment, the physical storefront - you get the idea). Frankly Alan, the entire industry needs a good shake-up; the rather desperate efforts of protecting antiquated business models - SOPA and its ilk - only forestall what will hopefully be a broad dissolution of hierarchical control and profit, its replacement being the artist - the (real) content producer - and a direct unmediated link with their public.