"Ensure that prices are not artificially inflated"

Calls today from MPs on the Culture Select Committee (Times) "on websites, such as eBay, and the new breed of ticket exchanges, such as Viagogo and Seatwave, to prevent sales of fake tickets and to ensure that prices are not artificially inflated" make one good point and one bad one. Preventing sales of fake tickets is a useful and necessary service. "Ensur(ing) that prices are not artificially inflated" is what the market does already, indeed is for. What they actually seem to be proposing are price controls and (attempted) abolition of the secondary market for certain categories of events, which would create an artificial situation - specifically an artificial shortage of supply.