This was pointed out a few years ago, using comparisons from the js framework wars, and the js tooling wars.
To gain adoption, they need to do things better by a multiplier. Why is Vite the standard now? Because gulp was doing too much, and webpack was a complex mess. Vite is so fast, lightweight, and works.
Node and the Node contributors are taking every single idea Deno has and implementing them faster and better.
Deno is a nice idea, but it’s getting their lunch eaten.
People may show excitement over the hot new thing, but nobody is going to migrate their entire architecture/platform over unless it’s incredibly convenient or they’re rebuilding from scratch. Backward compatibility makes it less of a barrier of entry to migrate.
That’s good for adoption.
But also a foot gun, since the roadmap of Deno just starts to look like Node.