We have kids with Chromebooks and older laptops and on meeting with 10+ kids, Hangouts Meet becomes intolerable. Not to mention the lack of control - kids mute the teacher, can speak at any time, there's no raising hands, etc. We have to install a bunch of extensions so that we can have a basic functionality in place like the Nod Chrome extension.
Its a pity there is no cross platform communication standard - it looks like it will evolve like messaging with dozens of companies.