In many ways, the State of California telecom systems are dinosaurs that are too stupid to know that they're dead....And there's not much need for a center in S. Calif to call a PD in Siskiyou county, which CLERS could do, back in the day.
Yes technically they can be dinosaurs, and politically every agency has the pervasive thought that cell phones just work. And if cellphones don't work, the landline will. When 90% of your day job is spent in the office/cubicle/conference rooms, and another 9% in an air conditioned vehicle with bluetooth attachment to both your personal and your agency-provided cellphone, you tend to forget about LMR. It isn't on their mind, at all. When money needs to be spent to support LMR, when training/procedures/testing need to be scheduled to support LMR, they don't see a need for it, at that moment. It's the 1% moments where their cellphone becomes dumb and deaf (Camp fire, santa rosa fires, etc.) and they request a cache of sat phones from a warehouse in Sacramento to carry around, that hopefully someone continued paying the bill for all these years. It's a huge uphill political battle to find support for these strategic LMR systems the state has.
Why strategic? Because it's a quiet resource in a very solid and maintained radio vault and tower, backed up with generator and days of batteries, covering most of the state with at least mobile radio coverage, and can link back to the State Operations Center and the Warning Center. California is a very dynamic state when it comes to disasters. It's a state with large geographic holes that the private industry has no redundancy in (911 and massive phone and internet outages for the entire north coast if someone so much as sneezes at the fiber on the pole, and that same pole carries the fiber for every major carrier in the area, roadside on a blind curve in a foggy area. The same fiber burned up in the 2017 fires causing large outages for cell, 911, landline, hoot and hollers between sheriff substations, and internet on north coast for 4-5 days) It's another option. When in the heat of battle, options are real nice to have. If not for local use around an incident, it is another option for the EOC or OES chiefs to reach back to Sacramento and make resource requests etc. Those people may forget the resource even exists in that moment, but the smattering of radio geeks around the state who are called up to solve the problem know exactly what aces they have up their sleeves.
For us scanner listeners, it's simply an annoying CWID that interrupts us from hearing the dog catcher. You might catch a random test from a PSC tech or OES staff to help burn the dust on the heatsink and blow out the cobwebs.