Taken literally, your statement said that [non-pro] DTP died because it had good tooling. I don't know what tooling for DTP is, but it seems unlikely so good that it would kill the software it supports, so your comment seems like nonsense. Why bother posting it if you're perfectly happy with that?
The real truth is more boring: DTP didn't die at all, it just merged as a category of software with word processors because computers got powerful enough to run programs with a union of their features. Whether the programs in this new combined category got called one thing or the other mainly depended on their history: Word and InDesign today have a lot more in common with each other than either does with programs from the early 1990s that are nominally in their respective categories. Whatever you were saying, it didn't seem to be that, so it was wrong anyway! But I asked nicely because I was curious if there was some substance there.
