Celebrity businessman Kevin O’Leary has the country’s telecom regulator in his sights as he launches his campaign for leader of the federal Conservative Party. O’Leary, who announced his entry into the race Wednesday after months of speculation, said in an interview with BCE Inc.’s BNN that he will be “taking a spatula to the CRTC,” and took aim at the regulator’s decision to prohibit simultaneous substitution of American advertising...