I also remember the IT guy saying that they had invested too much in a dedicated Blackberry server, to which I laughed and said, "It doesn't matter. The market is going in a completely different direction." It is maddening sometimes how large organizations become fixated on where they have been, rather on where they should be going. It's a little like saying, "We can't get those newfangled horseless carriages, because we've invested too much in wagons and buggy whips."
The problem is, if you have 300,000 employees, it takes three or four years to make the change. By the time you finish, the “new” technology is obsolete.
That has a name: The sunk cost fallacy. It’s what keeps people sending money down a hole so that the money they already put down the hole isn’t “wasted”.