I've been worried about someone taking over domain in recent years as well.

I've bought a bunch of decentralized domain for this reason on handshake, sol, etc. They aren't super usable yet as most email services won't resolve the alternative DNS but who knows what future holds.

Namecheap acquired namebase (namecheap of handshake world), recently.

https://www.namebase.io/blog/namebase-has-been-acquired/

So I've hope it will go somewhere.