Apple does make this little laptop that does exactly what they're talking about for a whole crapload less than $2000. It's called a MacBook. It even comes with a vastly better display and a much longer battery life.
If you could find a PC with exactly the same components as a mac, I don't doubt the mac would be more expensive. It's a premium brand. As in, you know, you pay more. But, to us mac users, it's worth it. We buy macs because of the OS. That's long before you even consider the simple fact is that the newest macs have unparalleled design and build quality.
God, after all, is in the details.