thats a common argument against IDEs but i think it doesnt reflect reality. The most powerful IDEs like Visual Studio, Eclipse, XCode, IntelliJ IDEA have all been around for more than a decade and wont be going anywhere. Of course if you use some less popular product it might get abandoned, but the same can happen to less popular open source projects.

All the Textmate users now seem to be burned and always fear the software they use will die, so they stick to open source tools only. Those are okay for dynamic languages and smaller scope projects but i still find IDEs indispensable for large codebases and languages like C# or Java.