They probably sold your stuff already before but didnt told you yet.
On the fediverse everything you say is open in the public. And if a real company (that doesnt do this without consent) wants to train with fediverse data, they would be expunged asap from every instance. And probably lawsuits incomming. Because the fediverse builds upon trust (that nothing bad is done to your data), and if its broken hell let loose on them.
Linux is just superior XD, joking aside everyone should use their favorite OS.
How would you expunge such an actor though? Can’t literally anyone setup an instance and get a stream of content by design? Without the shady instance participating / posting data you’d never know would you?
I would say, if a company would do that legit, they would require a lot of agreements with other instances. If they do it under the “radar” like a sleeper instance, then we dont know and we will never know.
No agreements with instances necessary. All of this data s free and open ripe for using