Almost everything (electrical fields, atomic radius, even speed of sound in materials) seems to derive in some way from the speed of light and related effects.
perhaps this is an effect of having a speed limit in a universe, if a universe does not have any set speed limit (which is somewhat different than the phrasing speed limit is infinite) perhaps the discussed derivation of other speeds would not exist in the way it does in our universe.
In this universe, fundamental forces like electromagnetism directly contain things like c, so if c is infinite, everything is going to work very differently.