I agree, Deno at least won't take off for a couple of years. Many libraries are missing and companies are not that willing to rewrite their apps again. Unless the community abandons Node suddenly, it will be around but its market share will decline surely. If they can borrow some Deno features then the chance of Node dying will be very slim. Two that I find extremely useful are: url import and security. On the hand, if on Deno side they build a compatibility layer with NPM, then it becomes the market de-facto.