There you can perfectly see why the Mini is still around and hasn't received a update till now.
Profit in the size of what Apple makes from the MBs. We are told that Apple makes about 30% margin on the MBs, but thats margin not profit. 30% of $ 1,500.- ~ $ 500.-
If you subtract all things from the studio hybrid to match the Mini you save about $ 460,-.
With the Mini you can't match the HD size and you don't get draft n wireless and no way to upgrade the Mini to 3 GB RAM by...