fiber=c lasers=c fiber=nonlinear lasers=linear
So in physics terms, starlink will eventually surpass buried fiber in latency for all situations where fiber routing divergence from linear exceeds the ~1000km orbital round trip.
We've been getting a thunderstorm every evening here, and my Starlink slows down a lot -- not sure if it's ionization, the water content of clouds, or what, but it's definitely noticeable.
And my previous point-to-point wifi would also essentially stop transferring data when it rained, just in case some Starlink hater thinks it's somehow worse than alternatives.
https://en.wikipedia.org/wiki/Faster-than-light_neutrino_ano...