No that’s not what happened.
Carney conceded 50% of net profits because that gives the baby his candy. But net profits is calculated after paying back the construction debt and interest which is wholly owned by Canada. In addition, there’s some sort of economic development fund that’s jointly contributed to by the Canada and US, not a bad idea I guess. The big concession was giving the US veto power over toll changes for the bridge.
This article is wrong about the deal parameters. Strange