Meanings of substantial lessening in English

How then can UK regulators claim "a substantial lessening of competition" has taken place?

The commission said it did not expect the merger would result in a substantial lessening of competition.

The CMA's remit is to ascertain whether merger situations could result in a substantial lessening of competition.

The watchdog's mandate allows it to block deals that would likely result in a substantial lessening of competition.

The Competition Commission had initially recommended that the takeover be blocked as it was likely to cause a substantial lessening of competition.

The Competition and Markets Authority said it would consider whether the tie-up would result in "a substantial lessening of competition" in Britain.

The federal watchdog said it issued a no action letter after concluding the transaction is unlikely to result in a substantial lessening of competition.