>1. How to pay for stuff in the web in the same way you can pay with cash in the real world. This one is a bit easier. Prepaid credit cards are frequently acce

>1. How to pay for stuff in the web in the same way you can pay with cash in the real world. This one is a bit easier. Prepaid credit cards are frequently accepted online and can be purchased with cash. The fees are a bit high as is but there's no reason merchants can't create more of these and likely even lower the prices. Alternatively your CC provider could potentially act as a privacy guard by providing randomized rotating onetime transaction numbers as well, I know some pay services like Samsung pay do this to some degree already by creating virtual cards that require a third party to authenticate without giving your actual account, though I believe those virtual cards remain fairly static. With more potential entropy (large GUID), it seems reasonable you could rotate those on the fly.