The legal situation
right now does not matter. Who pays the lobbyists? This is a long-term plan not just of Tesla, but a corporate dream. No more danger of losing customers, when you have "the one ring" to
bind them...
It won't sound evil. They will just tell the politicians that in order to invest huge sums of money they need guarantees, that the uncertainty of not binding their customers hinders job creation and investment, etc. Nothing is new in that playbook, since from their point of view it's actually not even wrong. It's not like they have to come up with some outrageous lies. Today it's Tesla, but that process has been going on for a long time. It's just too good: Control over a stable income stream instead of the ups and downs of the free market. It also appeals to people working in those firms, so again not actually clearly "evil".
It also appeals to a lot of people in our allegedly "uncertain and dangerous times" that there is ever more "order" and control. They actually have a point: The more complex out systems become, which includes the state, the more dangerous failure and the harder a recovery. Are our systems becoming more unstable? If so the trend explains itself, because that calls for more certainty and control - since changing the system itself seems to be no option because nobody knows how and what to change it to, or at least there is no trace of a consensus. So, more order and control it is.