Nobody is 'forcing' these companies to provide any platform at all, they do it to make lots of money and gather information on people, nobody is forcing them to do anything. That said - these companies now find themselves in the position, of exercising far more censorship and real control than any companies or governments who've existed before.
Another problem, is that in the history of things - as far as I can tell, actually de-platforming people has never really solved a problem - there might be a collective sigh of relief when someone swings the ban hammer, but overall - I think trying to silence voices like Alex Jones causes more problems than it solves.
Of course they won't listen, they're all idiots - but to me it sounds like you have some misplaced belief, that the majority of people are all super clever and get their information from good sources seems to me that you're angling for perfection and balance in a world full of clowns.
In my eyes, it would be far simpler, easier and probably safer in the long run - to let him run his mouth off, idiots will idiot - but they'll be doing it out in the open where it's easier to discuss and laugh at, rather than sidelining them, sending them underground and potentially making things more dangerous.