The demise of Canada 3000 about a month ago has changed the competitive landscape of Canadian airspace and provides more opportunities for rival carriers WestJet and Air Canada, according to Michael Linenberg, an analyst at Merrill Lynch He views WestJet as one of the hardly any carriers in the world likely to move round a profit in the December quarter. And on the same level a new $24 roundtrip security charge by the agency of the ...