It might not be a global conspiracy but the conspiracy is jurisdictional and the exchanges and the government on one side vs the customers and bitcoin on the other side.
That's right, unfortunately, as soon as the money gets into a centralized organization, users immediately find themselves in a disadvantaged position. And the government not only takes a side of a centralized organization in disputes, but passes numerous laws to encourage users to deposit their money in centralized organizations, as well as to reduce the use of decentralized forms of money like cash or bitcoin.