Well, never say never. Because I never thought I would see the
Environmental Protection Agency rolling back emission standards for new gas cars while simultaneously claiming it increases safety for American families. Using fuel economy standards to reduce the number of big, heavy cars on the road would actually increase overall safety, not decrease it. The EPA has delved into the fields of safety and economics (without applying or demonstrating any kind of expertise in those fields) to justify straying from their mission to protect Americans from unhealthy emissions:
U.S. DOT and EPA Put Safety and American Families First with Final Rule on Fuel Economy Standards | US EPA
Federal agencies and courts have been undergoing many troubling fundamental changes in recent years so it wouldn't surprise me to see the FTC bring anti-trust claims against Tesla saying they are unfairly harming the competitiveness of gasoline and diesel vehicles by producing EV's at a low cost by using an unfair combination of federal and state tax incentives while avoiding federal and state fuel taxes to further lower total operating costs. Or some other wacky reasoning.
So, while I agree that Tesla is unlikely to ever violate anti-trust law, that doesn't prevent this kind of scenario from becoming a strange new reality. It may depend upon who we elect this fall.