Or giant megacorporations each hire 200,000+ of them to create products for the non-magic folk to consume.
After a few decades, the idea of being a wizard is synonymous with working 8+ hours a day on magic that no wizard really wants and there is so little new spells and magic being created in the world that everyone wishes there wasn't any.
Then leaks come out that the products these megacorporations create have been slowly killing the planet and they've known for decades. But since they have so much power and money, nothing can stop them until the world dies.
Yep. You wouldn't have adventurous magicians going out and casting spells against dragons. The variety of spells known by D&D type wizards wouldn't even be a thing. You'd have a guy who was a specialist in ritual-casting flame spells whose job consisted of continuously heating up cauldrons of metal ore so it could be smelted. If he was jumped on his commute home, he couldn't fight the attackers off with "fireball" or something. Maybe that was covered in school decades ago, but he's spent his entire career doing nothing but that one smelting spell Or, you'd have the "Gate" wizard whose entire job was to keep up a portal for their entire 8 hour shift, so that tourists could pass back and forth.
This makes me feel so much better after spending a morning banging my head against some wild pointer arithmetic, thank you much much! (Ultimately the pointer incantations were successful, praise be!)
That's literally Megumin from KonoSuba lol. She's supposed to be one of the strongest wizards around, but refuses to learn anything other than explosion magic. Explosion magic is basically useless in most situations, as it just flattens a huge area.
Megumin's other problem is she only specced into things that would improve her explosion's damage output, neglecting basic mage things like mana capacity and efficiency. So she can only cast one (stupidly overpowered) explosion spell before all but passing out from using more mana than she actually has. It's why no other party would take her, because even in situations where the spell would be useful she becomes a massive liability after casting it.
If magic was real, expert magic users would not trust it at all.
"Haha yeah I mostly do transfiguration magic but I do some evocation too occasionally. No I don't eat any transfigured food or do any of that at home or anything honestly I'm surprised it works at all."
I've been slowly reading through rimworld and honestly I love how Pratchett balanced out the existence of magic by making it such a pointless persuit that wizards are basically just beurocrats