I have a few points to respond to with this

1. what qualifies as "Big Tech?" I assume most people would agree Facebook and Twitter are included, but reddit? Discord? saidit? some random person's forum? what about a wordpress blog? sites and services rise and die all the time, etc, so what about these?

2. why should someone be compelled to host your speech? we are provided with a platform to speak our mind, but just like in real life, if someone's causing trouble and I have the right to tell people to leave, it's my right to tell them to do so. I'd be more convinced if a site like saidit, which has over 250,000 posts and 1,000,000 comments so far couldn't be hosted for $50/month. there are also plenty of free web hosts if you're into that, or you can host off your computer directly.

3. content moderation can be pretty difficult to do at scale and it isn't a solved problem. you have people posting outright spam which, which is a cat and mouse game of itself (for example reddit has better spam filters than Facebook or Twitter, and reddit's spam filters are notoriously fickle and annoying to deal with at times. but you also have outside agents from whereever. even just enforcing the bare minimum of rules is downright impossible in many instances. how could something like this be enforced fairly, especially when it comes to political speech?