> They will have to send people bills by e-mail (or perhaps even snail mail) and await payment, like any other honest business. Then suspend the account if it is in arrears for more than X days.

How do services like Netflix and Spotify work in India? In the UK I pay Netflix £6.99 a month (about the price of two coffees), and I'd get rather annoyed if I had to send them a cheque for that amount every month :D