I think betting on dat or hyper-stack and the pear runtime is a save bet.
keet is state of the art and proves what is possible, which other stacks lack.
The stack behind the pear runtime has also been worked towards since 2013 and survived a lot of tough times.

Other projects are at the mercy of funders and if those leave ornchange their minds, people move on and things die quickly.

That is different from the pear runtime which despite lack of funding for long periods of time, survived and is striving, because people give it a lot of love and effort and this is rare to find imho.

It outlived many projects over the past 10+ years, projects with more hype and more funding. ...it might outlive nostr as well 🙂

And also because Keet can do a lot of things nostr cand and was never designed to do.