This is an excellent model for building any lifestyle business, not just for artists. If you knew how much money your favorite customers made, and asked for ju

This is an excellent model for building any lifestyle business, not just for artists. If you knew how much money your favorite customers made, and asked for just one day of their income to support you, it becomes trivially easy to work out a definition of sustainability for your business. For SAAS businesses, the number of "true fans" that are therefore required could be ridiculously low. 100? Maybe 10!