But I have bandwidth to share, not cash. I'm already at the lowest subscription level with my ISP. I understand the argument, but if there was a general technical solution this would be nice, right?
I had some hopes for Filecoin (i.e. a P2P system with monetary incentives attached to backing up other people's data, from one of the very few groups in the crypto space that don't look like scammers to me), but I haven't heard anything about it in a while.