why does software suck

why are game developers the only people who can make reasonably fast and reliable software

i guess also operating system developers

>>1
Feedback and large-scale testing. It forces Quality.
If your niche field is software that simulates anthills in text format, your userbase is going to be low and feedback sparse; conversely if your niche software is GRAPHICAL ANTHILL SIMULATOR 3000 you'll get thousands of free beta-testers.