unlike the dropbox case, my point isnt, "oh go and do it yourself" -- my point is why-t-f doesnt gcc/clang, etc have a obv-build-tool --live-rebuild option? Or

unlike the dropbox case, my point isnt, "oh go and do it yourself" -- my point is why-t-f doesnt gcc/clang, etc have a obv-build-tool --live-rebuild option? Or, more alarmingly, why are things like jrebel fawned over? Rather than, say, it being an embarrassment that java dx is worse than programming dx 30-40 years ago? Why isn't the basic thing all OS do, ie., live reloading of code, a day-to-day essential element of all development? I really don't know. But to be clear, it was 50+ yr ago, 40+ yr ago, 30+ yr ago --- and as of today, it's $100/yr subscription (lol?!)