I want to know the answer to the following question:
What problem rocked the PC industry in 1989?
All the background I'm provided with is that "In 1989, Jean-Louis Gassée had steadfastly refused to lower the profit margins on Mac computers, then there was a component shortage that rocked the exponentially-expanding PC industry that year, forcing Apple USA head Allan Loren to cut prices which dropped Apple's margins.". Is that enough to answer the question?