That's not really a fair comparison, this holds true for almost everything. If you bought a car twenty years ago and you buy one now, for the same amount of your money's worth, you will receive more than you did back then.

And a good thing, otherwise there would be no innovation at all.

I've just checked. I can buy a Samsung 2TB drive for €75. This new WD 3TB drive costs €240. While I understand the idea behind the latest and greatest, I really think the difference in this case is a bit too big. (but I'll pay it, nonetheless. )