Same reason why building a house is so much more difficult than it was years ago - mind numbing, overwhelming bureaucracy. It's easier than ever to solve an important personal, business or non profit need in 10 lines of code, but coding environments are not optimized for such needs. Everything has to be portable, and scalable, and localizable and accessible and graphical and event driven and tools wouldn't let you just have user fill in a single language form from beginning to end and press a button to process it using high school level math or 70s era text parser. What is forgotten is how many ideas need to start quick and dirty and gradually mature if rising need justifies the resources.
