Entrusting our speech to multiple different corporate actors is always risky. Yet given how most of the internet is currently structured, our online expression largely depends on a set of private companies ranging from our direct Internet service providers and platforms, to upstream ISPs (sometimes...
Just because you get to a public park in a privately operated taxi doesn’t mean the park is suddenly private. It would also be absurd for the taxi to have a say in how you spend your time in the park.
I also refuse to trust that any private corporation would have my best interests at heart, or that they would not use the excuse of policing hate speech to also interfere with discussion against their corporate interests.
The taxi has a say in how you spend your time in the taxi, however
If you enter the taxi and the driver sees that you’ve got a shirt with a swastika the driver can tell you they’re not taking you for this reason.