I'll never get over the way Apple treated OpenCL. They saw the train coming down the tracks, spent so long hedging their bet against CUDA, and threw in the towel the moment actual demand started cropping up. CUDA very nearly had a serious, corporate-funded and write-once-run-anywhere competitor.

Normally I write something snide about not seeing where the puck was headed. But Apple did skate to the puck the puck here, they just did nothing with it.