In 1987 the economist Robert Solow said "You can see the computer age everywhere but in the productivity statistics".

We should remark he said this long before the internet, web and mobile, so probably the remark needs an update.

However, I think it cuts through the salesmen hype. Anytime we see these kinds of claims we should reply "show me the numbers". I'll wait until economists make these big claims, will not trust CEOs and salesmen.