I think most people would use alternatives to Zoom if they weren't obliged to use it because their university or their workplace have some kind of partnership with them.
This is definitely not true for me or most anyone I talk to. In fact, I was incredibly glad when my university created an agreement with Zoom, and am now often the one asked to create the meeting when communicating with friends and family (including on FB Messenger which has video calling built-in) to use Zoom and avoid the Free plan limitations.
