[kalleboo]

> there's only a handful of residential ISPs available

Where I live the nationwide fiber network has around 100 ISPs available of varying reputation.

Wikipedia says that PPPoE "offers encryption" but now I'm curious if this is effective, and actually used by anyone...

[mseebach]

Having the wire, especially if it's fibre, between your home and ISP encrypted is probably of extremely limited value. Your ISP has access to the (unencrypted) endpoint anyway, and any adversary with the resources to actually tap your fibre probably have higher value and more easily accessible means of spying on you anyway.