Regulators in most countries limit the amount of spectrum that a carrier is allowed to obtain as a way of reducing the risk that rival cellular carriers will be unable to obtain the spectrum they need to compete effectively. For similar reasons, regulators may consider how a proposed merger...

If one or two cellular carriers gain control of enough spectrum, they may be able to prevent current and potential rivals from getting the spectrum needed to compete effectively. Thus, regulators typically attempt to protect competition through some form of limit on how much spectrum any one...