Well, the main point is that capital largely operates outside of bourgeois control. I think it's more useful to treat it as such.
Like, think about probably the biggest blunder in history: the transfer of the industrial sector of the US to China.
The Amerikan industrial sector was the defining factor of the US hegemony. It was what allowed the New Deal and the victory over the USSR to happen.
And they handed it over. Because it was profitable.
So I don't think treating the bourgeoisie as an organized class is very useful for communists. they are dangerous, sure, but it's mostly because they have the same goal of screwing over the proletariat. Other than that, they have their own struggles between themselves.
Given these points, a New New Deal probably isn't gonna happen. Again, because they literally handed over what allowed it to happen.