Don’t we have satellites broadcasting super accurate time, now?
1. GPS requires a clear line of sight to the sky. Doesn't work for indoor clocks.
2. Shortwave receivers are more energy efficient.
3. Redundancy is a good thing. Just in case GPS (or your receiver) has a problem.
4. WWV isn't just time. It also serves as a frequency reference for radio stations. It also transmits marine weather alerts, space weather (solar flares, etc.), and GPS system health updates. (Though apparently the marine weather notices are being discontinued in Jan 2019.)
Can satellite time provide an equivalent or better solution here?
For those who haven’t: it involves drilling holes in the roof of your data center for a satellite antenna.
To get halfway decent holdover performance, you want all the precision you can get when the constellation is good. That requires the best skyview (and least multipath) you can manage.
If you mainly care about time and can tolerate a few microseconds of error, usually being able to see 4 satellites might well be enough.
I remember seeing a gps receiver designed just for time that could maintain sync using only one satellite (it assumed that it was bolted to an immovable object, and it might have needed to see 4 satellites at once at some point).
Terrestrial AM Shortwave is super robust. And there is a ton of gear out there depending on it.
The cost of the cut will be orders more than any savings.
Worse, it will probably be turned right back on the moment saner heads prevail.