I think accessing Google search through startpage+adblocker just consumes google's resources without giving them any ad revenue, so it's a way to screw them.
They should be. Their position as the leader of the free world gave them enormous soft power. If every American multinational loses a significant portion of their overseas business it's going to be a significant hit to the US economy.
Due to recent events I'm trying to divest from US tech as much as possible.