Does EU have the USA problem where most farmers are basically sharecroppers where they are mandated where they can buy their seed, buy their fertilizers, where they buy their chicks/sows/calfs, what equipment they can buy, how they can repair their equipment, where they can sell their crops, and at what specific prices all from a single undemocratic corporation?

In the USA it's basically corporations that run everything and drive the farmers into poverty where said corporations can then buy their land and rely on undocumented workers to keep the abuse going.

From the outside EU farmers seem to have better labor relations, but don't know.

Swiss here, living in a small town quite close to farmers. I would expect if it was the case here, I would have heard about it, given my proximity. I'm aware of this "arrangement" in the US, never heard of it happening anywhere in the EU - I haven't done a comprehensive study though, maybe someone with more knowledge can say more.