I was going to subscribe to Evan Prodromou's new premium account but realised this is not Value 4 Value. This is the old web model of pay me every month even if I offer no value. Me paying Evan would be a leap of faith to believe he will deliver me $5 or more value. Now Evan may well do that but in a Value 4 Value model I would pay Evan what I wanted to based on me valuing his content and then only paying for what I consume. This is one reason why ActivityPub needs to support SATs.