The new Conservative government of John Diefenbaker warned Avro repeatedly that the Arrow program was in trouble. In February 1959 it canned the project. The company laid off 14,000 workers. Many engineers left for good jobs in the U.S., some in the space program. All existing Arrows were cut up for scrap.
Legend has it that one survived.
Thus a national dream died, and Canada began its descent into mediocrity. The Arrow is too much of a success. Never mind that the real Arrow was never fully flight-tested, never flew with its intended engine or electronics or weapons systems. Never mind that Avro's track record was horrible and the company was a mess. Never mind that the Liberals too had given up on the Arrow but postponed cancellation until after an election they expected to win.