Sony has been in the red for over 2 years. But I would be shocked if they got out of the eBook and eReader business.
This brings up an interesting reason why the supply of Sony eReaders might be dwindling. Could it be that Sony can't get the parts because it's late paying their part suppliers. And if you can't meet supply demands then big retail chains will drop your product from it's inventories/websites. Some retailers are very strict on this. Walmart will stop carrying a product if the manufacture can't meet their monthly supply. I know they do that for M&Ms so they don't cut any brand or manufacturer a break.