Spot on. Some of us are working on it. IMO the best solution currently (ie until ipv6 takes over and assuming we get rid of NATs when that happens) is tunneling. I maintain a list of options here:

https://github.com/anderspitman/awesome-tunneling

If you wanted to self-host a website from your home computer today I would recommend buying a domain from Cloudflare, and using Cloudflare Tunnel.

6 months from now I hope to be suggesting some variation of my open source alternative, https://boringproxy.io. It's not quite ready yet.