Is the PSP considered successful for Sony?

[Final-Fan]

Sky Render said:
In business, the ultimate goal is to make a profit. In that regard, it doesn't matter if you sell only 1 unit, as long as you get a return off of it; that's still better than selling 30 million and taking a loss. Which is a part of why Sony and Microsoft's business models are so very scorned by businesses at large. To sell something at a loss in hopes of making up for that loss in the future is something that only a firm with a lot of capital to spare can risk. And is the PSP profitable yet? Has it made up for the losses it incurred early on? I haven't seen any reports stating such, but I would be interested in seeing them.

I didn't realize that Sony took such massive losses on the PSP.  I mean it's turning a profit now, and has been for some time, right?  Do you know what the initial loss rate was?  Do you know when it went from loss to gain?  Does ANYONE know what the gain rate is now?