Maybe I'm missing something, but what corps stand to make a lot of money here? This sounds like it'll cost the social media networks a fair bit of money, and the benefactors are Canadian news networks, none of which are worth a fortune, as far as I'm aware. Seems to me that Meta would've been lobbying against this a lot harder than any news sites could've afforded to lobby for it. Heck, even news sites seem shaky on it, at least based on the CBC reporter quoted in the article.
Happy to be corrected, I'm just finding it hard to figure out who the "big corps" are that would stand to benefit from this.