"Sorry this website only works in Chrome"
"Google Hangouts / Google Talk will no longer support XMPP / Jabber"
"Try our not-so-open source available mobile OS" We'll follow you across the web and in real life because our Open Source platforms are published as proprietary.
"Try our proprietary browser for which we release the code for but heavily modify before it gets to you"
At least Microsoft has open source projects that you get what they share published, no crazy surprises, telemetry aside for .NET tooling (which imho is seriously minuscule compared to what it could be).