For me the problem has never been about outright breakage. For IDEs, I have often observed: the whole is less than the sum of the parts. Trying to cram them al

For me the problem has never been about outright breakage. For IDEs, I have often observed: the whole is less than the sum of the parts. Trying to cram them all into one UI ends up removing a lot of capabilities, and it is always more difficult to add additional parts after the fact (since we should never assume all tools can be up-to-date with a changing world), compared to simply using the tools individually. And IPEs are far more complicated than IDEs.