Betamax - Betamax quality wasn't actually that much better.
Errm, that's horseshit, it was used in pro broadcast industry for a decade after it stopped being sold to consumers, for one ready, the quality was really good.
If you want the worlds most epic failure, surely that would have to be the Microsoft Xbox 360, with a massive 70% failure rate, and userbase that was only a quarter of it's console sales base (because of the huge failure rate and console replacement numbers). It was a major contributor as to why the Xbox One flopped to badly.
Other Notable entries:
Microsoft Zune
Microsoft Kin
Microsoft Lumia
Basically pretty much everything Microsoft aside from Windows and Office and their supporting backend and development products.
Biting the hand that feeds IT
