It makes the Mac the most versatile computer on the market.
The bargain prices you get in the sub-$1,000 PC category are exceptional. A new user is going to be much more easily swayed to the IBM world than they are to the Mac world.
I don't think Apple wants to emulate Sony. I don't think they want to do video cameras. I don't think they want to do TVs. They are rounding out the Mac consumer ecosystem. I think they will be extremely cautious about what they brand as an Apple product.