I'm sure removal was still weighed against how much would be lost (financially, functionality lost by people who isn't violating rules) etc.
In the Facebook case, there is some moderation (although it obviously failed), and the fraction of users who aren't doing anything wrong is absolutely staggering. The alternative to FB if banned, for people in that category is hard to find.
On Parler, the moderation was basically non-existent, the amount of well behaved users is small (although still a majority even on Parler obviously) and the available alternatives to those users are readily available, such as Twitter, making the damage to those users smaller.
In the Facebook case, there is some moderation (although it obviously failed), and the fraction of users who aren't doing anything wrong is absolutely staggering. The alternative to FB if banned, for people in that category is hard to find.
On Parler, the moderation was basically non-existent, the amount of well behaved users is small (although still a majority even on Parler obviously) and the available alternatives to those users are readily available, such as Twitter, making the damage to those users smaller.