On the other hand Microsoft Office is still used today - and is still the #1 office suite, especially with Excel. They've since cleaned up most of their security issues (I'm sure some exist, but it's not nearly as bad as it used to be).

The problem with Office and Zoom is that they are _the best_ at what they do right now. And that has a massive impact on what people are willing to give up to use it (money, privacy, risk, etc).