We've all read sci-fi where "any sufficiently advanced technology is indistinguishable from magic," but what about fantasy where "any sufficiently advanced magic is indistinguishable from technology"? I'm talking about a world where everyone uses magic, indeed society runs on it, but only the wizards understand magic. And the wizards will often work for kings because they don't want to concern themselves with things like the artisanship of the actual amulet or candle or whatever, they just wanna create cool spells, and the kings pay them really well, and sure maybe the amulets transfer a little life energy from the peasants to the king, but the peasants get amulets this way so really doesn't everybody win?
Maybe this is too on the nose