The point is that cell phones used to be a luxury item - if you recall the movie "Wall Street", they were an example of conspicuous consumption by Gordon Gekko. In the sequel (according to the trailer), the the old cell phone is comic relief.

Apart from goods with an artificially high price and limited supply (designer goods), and possibly goods which cannot be manufactured (land), the author is predicting that luxury items of today will be commodities of tomorrow.

I agree with you - this is an extremely good thing.