except it is comparing apples with oranges :-)
The valuation of Yahoo then (and so many others) was build on don't-know-what expectations with P/E 200-300. Apple is trading now at a P/E of 9.7 and does produce a bunch of great products even though some companies are catching up, it is the second largest profit making company after Exxon and Exxon does it with 4x Revenues. The slide obviuosly continues at the moment, but I don't expect it will crash back to much lower levels as your comparison chart would predict. As a matter of fact I would be surprised if this stays on single digit P/E for long time.