Granted there is an "I" in "president" and even three in "prime minister". Oddly enough there is no "I" in "ego", maybe this explains the confusion... But it certainly does not explain why the Canadian Government has been explicitly instructed to issue their press releases as being from the "Harper Government".
Maybe it's a simple question of ego-maniacal self centeredness and vanity, but I suspect it's worse than that... Especially when some official (even if 'former') tries to downplay any suspicions as "the stuff of "black helicopters and conspiracy theories."".