Sometimes 'ahead of its time' is not such a good thing. Specifically, when the available hardware can't keep up with what the system design demands[1], e.g. a responsive smartphone touch interface created in an interpreter (as far as I can see without even having a JIT compiler) on a 500Mhz embedded CPU, without GPU acceleration[2]. It was ahead of its time alright.

[1]http://hardware.slashdot.org/story/12/01/02/0213204/insiders...

[2]http://forums.webosnation.com/webos-discussion-lounge/295123...