I always thought it was to keep WiFi transmitters from interfering with each other in dense areas.
You know? That thought never occurred to me. Maybe I am wrong though I did read something about it a while ago, doesnt mean the information was correct but I think maybe a mix?
I only read about the power limits due to health reasons but I see there is something about what you mention as well.
This was a quick search of what I was talking about, looking for the specific on limiting router power.
https://www.fcc.gov/consumers/guides/wireless-devices-and-health-concerns
Update - I think you are correct and me wrong. I seem to run into interference more than health reasons as far as routers are concerned. Still searching, seems to be a dearth or information on the subject.
But clearly your statement is correct. Interference is the reason. I read something a long time ago that was incorrect I guess. In the sense they were liking it to the limited power output of cell phones.
Anyway, with the limited power output we agree, component quality and engineering to make the best use of what is allowed.
One more edit!
Besides the above link I provided, there is talk, years earlier about the health thing. Funny, in the internet age you would think I can find the clear cut answer as to why... though I still think you are correct
without a doubt but I wonder if this is also a consideration
https://www.networkworld.com/articl...elines-for-wi-fi-need-to-be-re-evaluated.html
and there was this, but not a FCC restriction on power. Seems the concerns were more on devices held up to the head when it comes to FCC.
"With that in mind, several school districts in the U.S. and other countries have tried to reduce exposure in the classroom to RF radiation from devices. The Maryland State Department of Education, for example, recommended in 2016 that school districts use wired networks instead of WiFi whenever possible, turn off routers when not being used, and keep routers as far away from students as possible. In France, WiFi is banned from nursery schools."
https://www.consumerreports.org/rad...ut-radiation-from-wifi-and-bluetooth-devices/