Greece is an unsustainable welfare state full of tax fraud where the government is the largest employer. If Apple "buys it" (partners with the current government for some kind of super sweetheart deal) and cannot send out those monthly public sector checks then a lot of angry hot heads with machine guns will be its biggest problem, not a cool reception to the Apple Watch.
Even if they cut a modest low tax deal, the EU would balk at a unilateral Greek deal cutting their tax revenues. At most Greece could offer Apple a low tax haven for domestic sales, but considering how small Greece's economy is, it would be financially stupid in both the short and long run to do this.
As a Greek-American and Greek landowner, I'd prefer the Greeks stop fucking up and get fiscally responsible for once instead of courting corporations or other nations to take care of them. I don't want the ancient lands of my ancestors sold off for some short-term cash relief. Nor do I want it to become some Cayman Islands-like tax shelter that will isolate it economically and become the plaything of the American super-rich.
I don't think the author of this piece remotely understands how incredibly stubborn and patriotic the average Greek citizen is. Greeks have lost their autonomy more than a few times in history. They aren't itching to lose it again. Saying, "You should let Apple buy you," in Athens would probably lead to a punch in the face fairly quickly for those reasons as well as the general anti-corporate attitude the largely leftist Greek population subscribes to. The American love of mega-corporations and super successful CEOs just doesn't translate there.