IDSA said that losses in Korea and China alone account for almost half that figure.
The total amount lost globally due to piracy is much higher -- that $1.9 billion doesn't include losses incurred in the U.S., Canada and Western Europe; those resulting from direct download via the internet; or losses in markets where there is not reliable data (e.g. many portions of Eastern Europe).
IDSA's estimates are included in the Special 301 report of the Washington-based International Intellectual Property Alliance, which will be filed with the United States Trade Representative this morning. The government could opt to punish countries known to violate software piracy laws by imposing prohibitive duties on imports from those countries, as it has already done with Ukraine.