Those developers by and large were active in software development before the creation of VSCode or IntelliJ. If you've already invested time and energy to lear

Those developers by and large were active in software development before the creation of VSCode or IntelliJ. If you've already invested time and energy to learning the ins and outs of one tool, the hurdle to switch is large. VSCode would need to be 10x better for the seasoned veterans to justify switching. If it were only 2x better, arguably the investment would not be worth it, but it doesn't change the fact that VSCode would be 2x better than emacs.