Cupid, I couldn't care less about who invented the best OS and who might have developed it first.  There are so many parts of a computer that have been developed and refined by different companies down the years.  Are we going to mourn the CEOs of those companies when they pass? 

Steve Jobs was a brilliant marketer, of Apple but mostly of himself.  His greatest achievement in my opinion was getting an Apple Cash Till into so money homes.  That was sheer brilliance on his part, I'll concede that.  That's the main reason I don't have any Apple Products (apart from an iPod that I won and refuse to sync with iTunes).