How about BeOS? Those people are forced to use Opera or NetPositive that's when Time Warner/AOL and Microsoft (Two massive monopolies) don't want to help any other platforms. 
Oh and from early on... Internet Explorer was forced onto me and now I can't be bothered learning NS6's GUI. The fact that AOL owns it dosen't help
MICROSOFT IS EVIL!
AOL IS EVIL!
TIME WARNER AOL IS EVIL!
THAT MAKES CNN EVIL!
THAT MAKES EVERYONE ON EARTH EVIL! - got a little carried away
Oh and from early on... Internet Explorer was forced onto me and now I can't be bothered learning NS6's GUI. The fact that AOL owns it dosen't help
MICROSOFT IS EVIL!
AOL IS EVIL!
TIME WARNER AOL IS EVIL!
THAT MAKES CNN EVIL!
THAT MAKES EVERYONE ON EARTH EVIL! - got a little carried away