Nothing like a little gentle xenophobia to sell some papers.
Half the tickets for the events have been sold via the raffle system. This was set up to try to make ticket sales a little fairer, by having a period of several weeks for people to register for tickets, rather than millions of people jamming the phonelines and website of the ticket agents on the morning the tickets go on sale.
The bulk of the remaining tickets go to olympic officials, families of athletes, and good old corporate jollies.
The rest are being sold in every country around the world who enter athletes. Because there's less tickets for sale in other countries, and a lot less demand for tickets, they've been put on open sale.
But don't let a sensible answer stop you all from ranting...