If you happened to follow Deno then here I have something which explain why nodejs is not going anywhere soon.

Little bit about deno,

Deno is a runtime for JavaScript and TypeScript that is based on the V8 JavaScript engine and the Rust programming language. It was created by Ryan Dahl, original creator of Node.js, and is focused on security and productivity. It was announced by Dahl in 2018 during his talk “10 Things I Regret About Node.js”.

1. Nodejs is been there since 2008 and have a lot of ecosystem, which deno will take time to reach there.

2. Deno is getting famous for its security features, but over the time nodejs also have gotten better with its security, even nodejs foundation have found a nodejs security group back in 2016 to combat Nodejs security issues.

3. Though Deno provide out of the box Typescript support, but some new nodejs framework just came which also support Typescript. i.e Koa, Nestjs.

Conclusion: Though Deno seems to be very prograssive as compare to Nodejs but it will going to take a lot of time to be stable so that developer start trusting and using it.