Good remarks
Neon, as usually, you don't disappoint in your remarks. Everything is correct in what you say, from a general perspective.
Not in my case, and not as I see the market around.
I mean, a public library may be an excellent target for Linux. Library members use nothing else but a web browser for connecting to a web application. I still wonder why TPL doesn't use Linux.
When it comes to a user hired by a company as office stuff, I haven't seen any job posting requiring skills with Linux and Open Office. I cannot recommend to a particular user working with something which doesn't bring any personal gain.
And, btw, there is Open Office on Windows, also. Any brand PC I buy for my company comes with Windows. I still have to fight buying PCs with Windows XP preinstalled. The company pays no extra-money for the OS itself. Then, why in the name of God should I replace the preinstalled Windows with Linux for using Open Office or a web browser, only?
Indeed, there are companies ready to push anything in the name of internal policies but, I avoid working for this type of companies.
And, AS/400 is not the best example. It still hasn't any competitor and if the user doesn't need anything beside working on the AS/400, that it is elementary that he will work on a h/w terminal. Otherwise, he will connect to the AS/400 from a PC, using a terminal application, so we go back to the original problem - Windows vs Linux. I don't see how the case scenario of AS/400 may be compared to the Linux's. It is another planet. And, there is no other alternative for AS/400.