You aren't locked into any news platform at all. They're all totally open and you're free to use any you want. You aren't removing a bullet to keep someone plugged into a walled garden here - as I said there's no restrictions on sharing US news, only canadian news. Google and facebook will continue to share US news and it will be the only news Canadians see from them, in effect reducing the reach of Canadian news and promoting its consumption in canada.

So this bill does the opposite of what it claims to do - it reduces the reach of canadian news, increases the reach of american news, and reduces the amount of money coming in to canadian journalism. Its literally the opposite of everything it claims.