And early computers were pretty poorly planned out.  Today a mouse is a necessity and makes casual computing quite simple.  That didn't happen instantly when personal computing first started.

You can thank the engineers at Xerox PARC for that, and engineers-turned-businessmen Bill Gates and Steve Jobs for stealing the idea. :P

In order to have a successful company in a technological area, your leadership must be proficient in both business and the technology domain of the company.  One of the reasons GM is failing, Xerox PARC failed, and Microsoft and Apple are on top of the world.