Disclosure: Many of the vendors mentioned are clients of the author.
I’ve been covering videoconferencing long enough to watch three significant efforts in the 1980s, ‘90s, and 2000s fail spectacularly for pretty much the same two reasons: proprietary hardware and software and too little interoperability. You wouldn’t buy a cell phone from that only connected to another phone from the same vendor, right? Yet, it is not unusual for the hardware and software from one videoconferencing vendor to only work with hardware from the same vendor.
Though it seems like this market is stuck in the last century, times are changing. Lately, I’ve been working with hardware from vendors like Poly that work with both Zoom and Microsoft Teams. (Teams appears to be making moves towards Zoom, which is consistent with its current effort to embrace interoperability and open source.