I am happy with Apple being strong in iPod/iPhone because they are weak in PCs. And I am happy with Google being strong in search, and Facebook and Twitter having the social network market.
If we got a Facebook killer from Twitter I'd love it. But from Google? I think they got enough fingers in enough pies for the time being. :)
So if they ran something like Facebook it would be much easier to compete with them outside of their ecosystem, unlike Facebook which tries to dominate all data submitted into their system.
To be fair though, iPod and iPhone did play a big role to give Apple the "coolness" as a whole, perhaps that's the right strategy - attack from the sidelines.
* An Intel chip means that I can run Linux on it and still have access to closed-source programs (Flash, Matlab, etc).
* An Intel chip makes it possible to boot Windows natively.
* An Intel chip makes it easier for Apple to maintain forward momentum without needing to goad Motorola/IBM/etc to improve their PowerPC offerings to be competitive with Intel/AMD chips.
Well, that is definitely a good reason to wish that Google will take over social networking…