I managed to convince another of my clients to go whole hog with GNU/Linux.
They were a bit reluctant at first. The main concern was the possible retraining of their idiot staff.
But I simply said: "Never fear, my dear. Your Linux man is always here."
So they did, and now they are very glad. Their staff actually enjoys using Linux. They state that it is far more natural, and colorful, than that crap Microslop. They are having fun while being far more productive as well.
Take it from the expert.
All that these reluctant bozos need is a gentle push and then there will be no going back.
GNU/Linux owns the world! Most people just don't know it -- yet.
-- Systemd: solving all the problems that you never knew you had.