If it is truly DRM-free, wouldn't this mean for the EMI songs, there won't be any borders?
There's nothing stopping it now except:
Each government wants its cut, and each jurisdiction has its own laws: age limits, credit-card regulations, fraud statutes, the list goes on forever. But taxes are always the most important.
Any central iTunes computer would explode trying to keep straight the GSTs (Australia's and Canada's), VATs and federal taxes under any other name the world over, provincial, state and territorial taxes the world over — and whether music is considered a sin within the bounds of a given world and area code. And if the reported taxes were wrong or not reported at all. . . .
Consumer-protection laws could take a beating, too. (Actually, all this is happening now.)