price drop, Price Drop, PRICE DROP!
And hope that Gears 2 or Ninja Gaiden 2 really push sales. But they don't have to do much, they're still in the lead...
Now is the time for maintenance. So a moderate price drop, and some good games would hold off the PS3 for some time to come. I mean, the Wii winning NA is inevitable, but if focusing on keeping the lead on the PS3, some good exclusives, and a moderate price drop should hold Sony's Platform off for a time to come, but Sony will be more apt to drop the price more, since PSP and [amazingly] PS2 are still selling, and both make money for every system sold, let alone software, so they've got some room to drop prices, and break even, take a loss for a quarter or two.