

I outlined some differences that could make it worth it over just interface binding for some. Another is that it makes it impossible to accidentally have another application exit through the tunnel, leaking your identity, like a browser logged into gmail.com. You have to explicitly set the container as proxy in the browser for that to become possible. It also allows using a separate VPN connection, provider or region for the torrent client, while the desktop user is free to use a different VPN connection or none.
They can’t. Competition for capital is forcing them to extract the everliving profit out of people. Their competitors would not be far behind on this train if it increases profitability.