These tools are useless because they struggle to play well with all the other tools on your computer. There is no common interface that allows them to share fun

These tools are useless because they struggle to play well with all the other tools on your computer. There is no common interface that allows them to share functions or data easily. We're working around this with various hacks but it doesn't solve the underlying problem which is your modern operating system. If the OS allowed easy sharing of code and every program was forced to share its functions/classes, then it would be trivial to move data around between applications.