There’s basically nothing categorical that can’t run on Linux…
From a desktop standpoint, I agree. From a business server infrastructure standpoint, I disagree completely. We run tons of software that doesn’t run on Linux. Maybe there are alternatives, but there are other aspects in play (integrations with other services, vendor pricing, etc).
It’s not just desktops that people worry about.
I’m iffy about giving more days to Google, but I use their VPN when I’m on any kind of questionable WiFi. I’d rather give the data to Google than to whatever random place is getting it from my hotels or whatever.
I also have a VPN server setup at home, but generally routing everything through home is too slow (for now, I might be getting significantly increased upload speed soon).
I use it for my work mail. I can’t speak to their privacy, but I think it’s ok. So far as I know they haven’t done anything stupid, and all the connections are only from my device, no cloud intermediary.
I do like that it allows you to only apply the ActiveSync policies to the app instead of the entire device. If my employer remote wipes my device, it only impacts the app.