I didn't say they weren't expecting or planning for this. But, you didn't answer the question. If they already have a solution, why wouldn't they implement it BEFORE someone did this? It's a good question. One that I can't answer either.
Again, I must repeat, I don't like that Apple is a closed system. I wish they'd change their minds. I think it's a mistake. But none of those opinions matter.
The solution is Snow Leopard, intel only so Apple has a much more manageable pool of hardware to verify. I'm not saying they'll do it, but it is a step in that direction.
I think, the reason they're not waiting and going after Psystar now is that they don't really mind the OSX86 community in general, they probably think of it as advertising, a good way to let people try out OSX without support, but with Psystar, it was commercial and it came down to Apple protecting it's investment.
As to Apple opening up its OS to other computers, it won't happen, there's just not enough money in selling OSs anymore. Microsoft makes most of its profits from Office now and they have long term deals in place with all the manufacturers and long term support deals with businesses and a ton of cash in the bank to fight off any competition.
There's also the inertia of the market, a huge number of people think of windows and office as the computer, they have no idea what an OS is. This is why OpenOffice.org and linux WMs tend to look like microsoft products on the surface, even minor changes confuses the hell out of people who've been brought up thinking windows is the only OS.
Not opening Mac OS to clone makers was a huge, monumental mistake, but it was a mistake made two decades ago and there really isn't a way to fix it now, many have tried and failed, Beos, NeXT, linux, were or are all better than windows, but MS has plowed them into the ground.
Before anyone gets mad, linux is still trying, it's gaining ground and in the end it may win, but it's gonna take a looooong time and linux doesn't have to issue profit and loss statements to its shareholders.