Not to mention that he would need a deal with the collection societies in each territory he wants to have business in, e.g. to serve UK users he needs a deal wi

Not to mention that he would need a deal with the collection societies in each territory he wants to have business in, e.g. to serve UK users he needs a deal with PRS, in the US he needs to deal with ASCAP, BMI and SESAC, in Germany with GEMA and so forth. He would need to block the service in any territory where he doesn't have a deal with whoever is representing the publisher of the work in the given territory.