China Becomes 2nd Largest Apple Market: Cook

"China accounted for 16 percent of fourth-quarter sales, or about $4.5 billion, Chief Executive Officer Tim Cook said on a conference call yesterday. Quarterly sales in China were up almost four times the year-ago level, he said."

This is staggering. From http://www.appleinsider.com/articles/11/10/18/china_sees_ama... :

"In China, revenue rose from 2 percent in 2009 to 12 percent this year and 16 percent this quarter, thus making China “the fastest growing region by far.” Total revenue for China amounted to $15 billion for fiscal year 2011 compared to $3 billion in the previous year."

That is just insane growth. At this rate, China could account for 1/3 of Apple's revenue in a couple years.

What concessions (if any) did Apple make, especially with respect to cloud-based services?