You really ought to read “No Filter” by Sarah Frier. She talks about exactly this, except with Apple and iTunes in 2001.
Apple’s biggest change wasn’t “digitizing music”, it was enabling a system that allows arbitrary changes to terms and conditions for services they offered. Apparently if you presented a digital copy of a TOS and users clicked one button, it was legally binding.
Other companies caught on and started doing it, and well that’s how Zoom is able to do this - people don’t bother to read what they’re agreeing to so legally it’s the user’s fault if the software does something they don’t like.