There are exceptions such as Hawaii where grid power is expensive and sunshine abundant, but the US is big, geographically diverse, and because of that adoption varies greatly on regional dynamics.
It may seem unfair or unnecessary for US employers to require US employees to have a UPS, solar array, a redundant network connection, etc. But if employers required these things up-front, surely some tech workers could step up to the challenge and perhaps even be distinguished from those who don't get it.
Do you mean—for domestic employees?
It seems like the employer would be throwing away leverage in the employer/employee negotiation without giving the employer anything they actually value.
The computer should be reliable, and the network should be reliable. I’ve seen how satellite connections flake out, freezing with every handoff like distant cell towers . If the tech stack and/or transportation isn’t reliable, then neither is the expectation of productivity.
If employees need reaction times that are reasonable, live teleconference connections on a presentation, then the employer may say that certain precautions are necessary to guarantee reliability up-front.
There are more people doing “digital nomad” work and more American expats in foreign countries. A worker who is a citizen of the USA and employed by a USA firm may be working from South Africa. A digital nomad may be less prepared or less well-informed about the prevailing conditions on the local power grid, network backbone, solar wind and aurora forecast. You name it.
If someone believes that employers are concerned about “throwing away leverage” then that believer is not me, because I have personal lived experience of such employers and such written requirements.