Storing your personal data, family photos, and other files in the cloud may be utilized for machine learning and AI purposes by ToS. It doesn't matter if it is a free or paid service. These greedy companies will not stop. Unfortunately, there is no way to prevent this from happening besides discontinuing the use of nearly all cloud services.
Zoom terms and conditions now allow training AI on user content with no opt out. 🤣 See section 10.2 and 10.4 https://explore.zoom.us/en/terms/
Zoom Terms of Service | Zoom

Read: Terms of Service – Zoom

Zoom
@nixCraft I have to use Zoom for work... 🙃
@robustjumprope I doubt that your boss will want the private data pertaining its business or their likeness used to train A.I.. That might have to be pointed out... @nixCraft
[EDIT: Read the ToS and it looks like they are talking, for now, about ancillary data like telemetry and usage timers and pointers, not video & sound but it's my interpretation of it, if I'm right, it's a matter of time. If I wanted spyware I'd install viruses directly on my computer].