It is their platform.
Free speech is freedom from the government not private companies.
It's just pure entitlement.
Users can install alternative app stores or apps directly on Android phones. Or even they could buy a Linux phone like the PinePhone and install whatever they want.
But no, they want the audiences built by private companies.
It's funny how those who decry communism so much want state control of businesses.
And to note, users on Parler are advocating blowing up AWS data centers: https://twitter.com/JohnPaczkowski/status/134811382832466739...