There is a risk of radicalization of masses. And banning people will not help with reversing it. They will find another way to communicate and the tech giants will no longer be able to challenge the flawed message. And the ideas should be challenged, especially the bad ones. Why the tech giants act this way and decrease their reach/base? It would be naive to think it is out of a good will. I suspect they want to show the new government that there is no need to regulate them, because they can do it themselves.