It can’t honestly be news to you that companies don’t exist in a vacuum, right? No decision by a company is going to be made in the absence of consideration for the broader reality in which they exist and seek to do business. To use a hyperbolic example, if Amazon considered having a “kick a puppy, get a discount” sale, the reaction of their shareholders, employees, and customers all factor in.
I’m talking about somebody forcing their hand, for instance a government agency or a particular stakeholder or a media organisation, not the normal calculus of weighing a myriad of factors to make a business decision.
The usual lynch mobs (which FB & Twitter allow on their platform) reported it en masse I'm guessing. This works well for getting conservatives banned on social media because their report systems are somewhat automated, but it also works for domains and email providers. I think they recently got Gab booted off Azure too.
It's frankly incredible that you decide to use the term "lynch mob" to describe people criticising platforms that are notable exactly for supporting literal lynch mobs and people encouraging actual murderers. Equally baffling is the equating of the criticism of these platforms to criticism of conservatives in general, which seems like something anybody with any respect for conservatives would want to avoid.