Its easy to answer when you realise that the Cloud is just someone else's computer. When you stop paying them, they'll do whatever they like with your data.
In Oz, there are privacy laws that are intended to protect the data, but most of our competitors openly ignore them.
In the EU, the GDPR is intended to protect the data, but once again, no one is policing it.
I don't know what the situation is in the US, but given the conduct of the 4 majors in AI development, I expect that its pretty much nothing.
Possession is nine tenths of the law, and once you give up possession of your data to someone else, you get what you get.