Of course it has a right to exist, just like the rest of the internet that's not on Apple/Google/Amazon
Exactly. There's nothing stopping Parler from just like.. setting up their own servers. This whole "We can't let the tech giants control speech this way" is pure nonsense until ISPs start blocking such internet traffic.
Bingo. Except there is something stopping them: money and regulation.
Amazon allows you to scale globally with a button click and a pinky swear. Rolling out their own shit would be an Elon-level undertaking which the Parler folks clearly had no interest in. Whatever batshit lawyers told them their backup plan for WORLD PEACE would somehow fly (on the back of fuuuucking AMAZON) should be disbarred for malpractice.