Starting Dec 1st 2017 all Canadian Carriers must unlock any phone on their notwork for free for their customers at customers request. So you can't unlock rogers or bell phone unless you or someone you know have an active account with them.
I would hope that all the carriers would respect the spirit of the bill to unlock all devices, no matter what vintage, or whether it is being purchased at the time of unlocking or 'one that I had at home'.
