Tippyverse - and by extension, all highly revamped magitech societies - are a very different thing from the caster/noncaster power split. The latter is baked into 3.5 D&D, but it's not hard to think of a society where magic accounts for many modern conveniences, while the ability of magic to affect living creatures is severely reduced.

Unfortunately for the latter, the only ways to stop magic in D&D involve other magic. (Or houserules that give certain mundane objects effective magic-stopping properties, which comes out to much the same thing.)

You have an even better reason to avoid having casters be at the top of the social pyramid. It makes them very visible targets, and ruling the masses takes time away from studying ultimate arcane power. So while there's nothing you can really do about class balance, you're not forced to have despotic casters either.