Even the staunchest of free-market enthusiasts tends to accept a need for competition policy, but the marketplace often is more self-correcting than we think, writes IEA Director General Mark Littlewood.

In his biweekly column for The Times, Mark argues that while big companies such as Twitter and Google do wield substantial power, very often this power is much more transient and fragile than we tend to imagine.

Read the full column here.