To claim the map's withdrawal won't EVER happen is clearly wrong. It will be displayed physically as long as there is a demand for it, which will probably be for several decades yet. Physical display may not necessarily be on paper, of course. Maps in the (not-too-distant) future may, for example be electronic with an equipment longevity, robustness and cheapness which makes it cost-effective to install them in place of the current posted ones, and with the ability to show real-time service information, etc.