It is interesting how much business leaders feel the desire for such a move. I assume it means they are scared of the consequences of not getting on his good side early. This in turn though could also very well mean that the US will slide even deeper into oligarchic territory.
The answer is simple. Antitrust makes rich people scared - spending money on politics now saves your bacon later.
I think this more mercantilist rather than fear of antitrust. We know that the Trump regime will not do much, if any, antitrust, but we also can clearly see that money going to trump can change how tariffs are applied.