Although, if they have to route stuff through EC2 instances anyway, I could just start jedieaston's homegrown EC2 email service, let customers pay me $100 a yea

Although, if they have to route stuff through EC2 instances anyway, I could just start jedieaston's homegrown EC2 email service, let customers pay me $100 a year to get them a domain name and spin up a email server in a EC2 instance and give them a login, then they don't have to have a box at their house which is liable to ISP and power outages. And you get the same amount of privacy that you get with this box (so about as much as you trust Amazon).