When and why did we stop worrying about monopoly power?

Paul Krugman in the New York Times:

Comcast’s chief executive says not to worry: “It will not reduce competition in any relevant market because our companies do not overlap or compete with each other. In fact, we do not operate in any of the same ZIP codes.” This is, however, transparently disingenuous. The big concern about making Comcast even bigger isn’t reduced competition for customers in local markets — for one thing, there’s hardly any effective competition at that level anyway. It is that Comcast would have even more power than it already does to dictate terms to the providers of content for its digital pipes — and that its ability to drive tough deals upstream would make it even harder for potential downstream rivals to challenge its local monopolies.

One puzzle about recent U.S. experience has been the disconnect between profits and investment. Profits are at a record high as a share of G.D.P., yet corporations aren’t reinvesting their returns in their businesses. Instead, they’re buying back shares, or accumulating huge piles of cash. This is exactly what you’d expect to see if a lot of those record profits represent monopoly rents.

It’s time, in other words, to go back to worrying about monopoly power, which we should have been doing all along. And the first step on the road back from our grand detour on this issue is obvious: Say no to Comcast.

Hopefully the Monopolies Commission is aware of this useful indicator.