I don't think this is any different from other cloud-based software. Cloud providers can be compelled to turn over your data, as long as they're actually capable of doing so. If you don't want your data being snarfed up from a cloud provider and used in court, then only use cloud providers with end-to-end encryption, or better yet don't put your data in cloud providers at all.

The only reason this ruling is even remotely interesting is because people don't understand computer systems, and chatbots feel different. For the technologically minded, it should be pretty obvious that typing into a chatbot is no different from typing into a Google Doc, and that the data in both can be available to the legal system without the user's involvement or consent. But most people aren't technologically minded and may not have realized that all of their data is being saved and made available like that.