I’m confused. You watch a private video conference call and record it, and then upload that recording to another service that lets you view that recording again

I’m confused. You watch a private video conference call and record it, and then upload that recording to another service that lets you view that recording again at a later time? And meanwhile they can take the content of that private video and do whatever they want with it? How is that legal? Why would anyone want to make use of such a service? Don’t current video conferencing solutions provide enough recording and playback options?