As programmers, we spend most of our working time in glorified text editors (I'm using mostly Emacs at the moment, which that is certainly an apt description of). I guess it's natural to be excited about new alternatives for our primary tool.
Psst, dont tell anybody, they are asking for money because they know a concept is not enougth and the need money to implment what you call 'a lot more'.
Good, so you understand that most of the problem is not this one concept. How does the one concept justify reinventing the wheel? There are several very good editors and IDEs. What is wrong with them?