If corporations had an unlimited right to free speech, the Civil Rights Act wouldn't be constitutional. Clearly though, it is, so the courts have found that some limits on private businesses ability to discriminate is legal.
They can do that, but not while claiming to be a platform.
Platform or publisher.
https://www.techdirt.com/articles/20200531/23325444617/hello...
Depending on how people see Big Tech, the law may or may not be changed. And the kinds of arguments FB, et al., make to defeat this law will affect how people see Big Tech.
Did I mention Section 230 Of The Communications Decency Act?
Well no I didn't.
The concept is broader than any law. And you should not be getting legal advice from Mike at techdirt anyway.