The 'Tech Companies That Started Something Great (And Then Went Bankrupt)' infographic gives credit where credit is due. Whether you realize it or not, most of the gadgets you are using and the technologies that you are enjoying today are based on models that were smartly thought up awhile back.
These genius ideas were, in some cases, ahead of their time. This led to these companies not being able to pay their bills as the idea either didn't catch on fast enough, or there wasn't legal precedent (as in the case of Napster, for example).
Wang Laboratories, the founder of word processing, Napster, the founder of online music sharing, and 3DFX Interactive, the founder of the graphic chip, were all visionaries in their respective technological fields who have forever changed the technological industry. Similarly, all three are no longer in business, but have instead given way to new companies.