It's not that simple
I open word to write a document on my windows box, because word is installed and that's what it's for. On my linux box I open Libre. I don't open Outlook, I fire up the oojah that send emails. I don'e open IE to have a look at what people are doing on TR, I open my browser, which happens to be Chrome...
It would only be Legacy thinking, at the point I come to buy some new kit. I'm used to Office, so I'll buy a windows box. Maybe I'll look at a Chrome box, when my kit finally dies, may be I'll think, well Outlook and word are things I do very rarely, and what I really need is Visual Studio, of the ability to work off line.
What I won't be doing is making that decision, based on a fad, or a fashion or the barking of some sheepledog.
When you look at the OS and applications question from a busines perspective, things become even more problematic.
My advice, you want to sell Chrome? Leave off with the cool, fashionable and trendy arguments, they aren't going to fly with the money men. They aren't thinking legacy, they are thinking bottom line.
