There has been a debate for many years about whether and when the old FM technology should be discontinued. This concerns the spread of HD Radio receivers compared to conventional FM & AM radios and the use of the Internet for radio reception.
Each technology has advantages and disadvantages - and for radio operators it is also a question of cost if all three transmission paths are to be financed simultaneously.
In Europe, Norway has already discontinued FM transmission. In Switzerland, the time is almost ripe.
In the U.S., the two reception modes will continue to operate in parallel for some time.