Even if you wanted to expand to meet increasing demand, the opportunity will be gone before you can get approval to build out for it (even in relatively business-friendly states like IN). And the company-purchase strategy has to be taken carefully, both because business capital is hard to come by today and because manufacturing operates with margins so small that there's no room for error.
Further, you have the risk of OSHA shutting you down or penalizing you to unprofitability. As I understand it, safety regulations are much like traffic laws -- if a police officer wants to pull you over while you're driving, they can almost definitely find something to charge you with, even if it's just their interpretation -- and the same is true of your OSHA inspector.
Wages/productivity play a large portion of being a good place to do high end manufacturing, but are still a relatively small part of your ability to profitably grow and run a manufacturing business.
Also, I think the parent post was referring to the fact that Steve Jobs is now CEO of Apple which IIRC does most of their manufacturing overseas (SE Asia). If SJ still believed that quote, then he would have been trying to 'bring it home' so to speak.
Does Apple have any manufacturing operations currently? I would be surprised if they did.
You're right about Intel. They are one of the few significant electronics companies left in the US. But they aren't representative of the category.
For example:
Texas Instruments - http://www2.prnewswire.com/mnr/ti/39147/
IBM - http://www-03.ibm.com/press/us/en/photo/34680.wss
Micron - http://www.eetimes.com/electronics-news/4087224/Intel-Micron...
That was with fairly minimal searching. Austin, TX is almost lousy with them for example.