If somebody wrote a bad, but useful, piece of software, and that software got really popular, then an industry would spring up to compensate for the flaws in that software.
Lots of people would get paid to help others use the software optimally.
Organisations would sell training for using the software in a way that would circumvent its flaws.
Companies would make money selling software that eased the discomforting aspects of the bad software.
Economies would grow because of the demand for products and services that made the bad software good.
Unemployment would fall.
Productivity would rise.
Would it not be disastrous, then, if somebody else wrote a piece of software that was equally useful, but had no flaws?