You'd think, wouldn't you. Or instead simply blacklist Baidu's analytics code completely. That will only hurt Chinese businesses using Baidu's product, and no-one else.
Google Analytics is, sometimes, blocked by the GFW – so, if you already sell out your users to Google, using Baidu wouldn’t be an unrealistic use case anymore.
I agree and I even think that this will be unavoidable, if that kind of abuse keeps going on.
Government influence aside, Baidu would be free to host their analytics callbacks for the outside world outside of the GFW. If they stay accomplice to this kind of attack, no matter if forced or willingly, they will suffer.
We could revoke their certificates, that would prevent any HTTPS request from accessing them. It wouldn't solve the issue completely, but it would be a start.