Main advantages of Zoom teaching for MBAs: a. Easy to create random groups producing social links which wouldn't happen due to homophily; b. Easy to get inside students' computers as they run regressions (useful for Data&Decisions); c. Students help each other actively in chat.

All these three elements are lost in classroom, unless one is willing to pay high logistics costs. The cost side you know it. Limited feel for class energy & penetration of material. 10-15% slower than normal lecture speed.

Also easy to implement a fully randomized cold calling in Zoom lecture. If done humanly, this is a good way to learn.