ipad doesn't have 27" screen, 3 cameras and as good mics. This is a dedicated device, so you set it and forget it.
and to most of us, but i imagine that most people aren't in the target market. My university outfitted all new lecture halls built in the last ~20 years with professional grade video recording equipment, most likely for thousands if not tens of thousands of dollars. By comparison, $599 for professors giving lectures via zoom seems like a bargain if the sound and video quality are substantially better than an ipad.
For the rest of us, we'll most likely continue with our phones, laptops, cheap webcams and ipads.