Monopolies reduce entrepreneurial activity

The argument

Monopolies erect barriers to entry in their industry. These may be regulatory, through high switching costs. For example, ratings agencies are a duopoly, and they have pushed for regulatory backing for their existence (NRSRO status) and then have actively lobbied to preserve this status. Microsoft, for example, made it very difficult to uninstall Microsoft Explorer when they were competing with Netscape. Bloomberg makes customers sign two year contracts to use the terminal and makes it very hard to quit. While each industry is different, rising product market concentration has led to a collapse in entrepreneurial activity across almost all sectors of the United States economy, as Ryan Decker and others have documented.

Premises

Counter-arguments

The examples are not monopolies. A ratings duopoly, a browser bundled by a dominant operating system vendor, and a financial data provider with long contracts are cases of market power and lock-in, which overlap with monopoly but are not it; the question asks about monopolies specifically, and conclusions drawn from oligopoly and switching costs do not transfer automatically. The empirical claim also overstates what the cited research shows. The literature on declining business dynamism documents a fall in startup rates and job reallocation beginning around 1980, well before the concentration increases usually dated to the late 1990s and after — a sequencing problem for a causal story running from concentration to entrepreneurship. The researchers themselves are careful about causation, and competing explanations are live: an ageing population and workforce, the spread of occupational licensing, housing costs that impede relocation to opportunity, and rising fixed costs in technology-intensive sectors. The argument's own wording concedes the point by saying concentration 'has led to' what the evidence records as having coincided with. Causation can also run the other way. Where a sector's leading firms have grown because they are genuinely more productive, concentration is the consequence of competition rather than its suppression; and the prospect of acquisition by a dominant incumbent is, in practice, a major spur to startup formation in software and biotechnology, which cuts directly against the mechanism claimed. Finally, the question asks for pros and cons, and the rival position's central claim goes unanswered: that supernormal profits fund research programmes with payback periods no competitive firm could sustain. Establishing a cost does not settle a balance, and this argument does not weigh the two.

Rejecting the premises

[Rejecting P1] The cases cited are not monopolies: a ratings duopoly, a browser bundled by a dominant platform vendor and a data provider with long contracts are instances of market power and switching costs, which overlap with monopoly without being it, so conclusions drawn from them do not transfer to the question as posed. [Rejecting P2] The dynamism literature dates the decline in startup rates to around 1980, before the concentration increases usually placed in the late 1990s and after, which is a sequencing problem for the causal story; the researchers are careful about causation, competing explanations remain live — an ageing workforce, occupational licensing, housing costs and rising fixed costs in technology-intensive sectors — and the argument's own phrasing concedes that the two coincided. [Rejecting C] Causation may also run the other way, since concentration can follow from leading firms being genuinely more productive and the prospect of acquisition by an incumbent is a major spur to startup formation in software and biotechnology; and the question asks for pros and cons, leaving the rival claim that monopoly profits fund long-payback research unanswered.