While having the largest community is certainly a benefit to an IDE, it's not a death blow to the others. JetBrains is a paid editor so they have more resources

While having the largest community is certainly a benefit to an IDE, it's not a death blow to the others. JetBrains is a paid editor so they have more resources per-user than an free editor. Also many tools are relatively easy to integrate or follow a standard (such as the language server protocol or dev containers) so all editors can benefit from those ecosystems. It's not a walled garden like the mobile OSs work in building up tooling for one editor can transfer over to others.