If this Intel move is partly to help Macs gain more acceptance and market-share, then Apple will have no choice but to reduce the cost of their hardware a bit to make it more competitive. Price resistance is the biggest problem with convincing PC users to switch, in my experience. They look at a $799 eMac and then point to a $399 Dell and wonder why they have to pay double for what they perceive as less.
IMO, this is really the biggest hurdle for Apple, not the chip. Mac Mini is a good step towards that, but, when you consider the additional costs to buy an extra monitor, keyboard or mouse, then you're talking about an iMac, which start at over $1000. That's more of a problem for Apple.