@neauoire in the 90s there were lots of companies that made money selling language IDEs (Think, CodeWarrior, VisualAge, Borland, etc) or even just distributions of open source languages (ActiveState). These were often effectively their own languages (eg I used a THINK C that was a non-standard C++ subset). I see Java as the thing that shifted commercial development towards an open/free “platform” and killed tooling as a viable business. Secondarily, the rise of Linux vs commercial UNIX.