How sony can sell more ps3s?

[NJ5]

There are three ways to implement BC:

• Hardware-only (the Wii approach and the old PS3 approach). Expensive unless the two machines are similar (like the Wii and GC are)
• Software-only (the 360 approach), which requires either a much more powerful machine than the one you're emulating, or the use of HLE (high-level emulation). HLE doesn't work equally well for all games, for example when games do dirty tricks like accessing the hardware directly. At some points HLE essentially requires that you rewrite parts of the code to get the game working. It's not by coincidence that there have been tons of updates to 360's BC, and even now it's still not running all the games.
• Software / hardware mix, what the half-BC PS3s do. Only works for some games and still comes at a cost.
  
  

The problem here seems that the software-only approach is very hard or impossible to use to emulate the PS2, the Xbox was a simpler architecture by comparison (less cores, more straightforward GPU etc). I read some things about PS2 PC emulators and it's not simple at all.

The conclusion is that either Sony coughs up money for BC or you get a very poor BC which can only run a few games.