Zoom was pretty easy to use for me, and I think that contributed a lot to why it took off. A lot of people who had to migrate to online meetings during the pandemic were not very tech-savvy at all, and when these video conferencing apps all sport the same basic functionality, the one with which gets the job done easier gets everyone's vote.
My organisation just recently migrated from zoom to Teams, and I can only say that I am not a fan of the latter. It's oddly missing a few features we have come to rely on, such as breakout rooms, I am stuck to using it on my work-issued laptop and only when connected to my school network (I could previously run Zoom using my work account on my Mac over wifi, which was key because VPN was slower over my home network), and for some funny reason, the developers chose to put the "share" and "leave" buttons next to each other (I have had colleagues who accidentally clicked on the wrong one). Plus there's no full-screen option when you are beaming your screen to a room of students/
I guess apps like Teams and Skype are representative of Microsoft's overall culture. Microsoft has all the vision they need, they just can't execute, or when they do, it's too early or too late and they show up at the party like a half inflated balloon, or cripple the product in a small but meaningful way.
I mean, you can look back at some of the promotional videos and stuff they released 25 years ago about connected homes, media center PCs, all that ****, and it all mostly came true. They saw it. They knew it was coming. And they blew it.