Google and HTC gathered a lot of flak because of their decision to leave out multi-touch functionality in G1 (HTC Dream) where proof-of-concepts have shown G1 to handle multi-touch gestures at ease. However, according to a member from the Android team, it was a conscious decision by Google. He says that Apple asked (ordered?!) Google not to implement multi-touch and Google happily obliged them.
Well, this is not as straight as it seems because there seems to be a lot of hidden motives. Both the companies benefit from each other and adding the most craved feature could easily spoil their relationship as well as decrease revenues.