I could go on, but people have this idea that D&D Wizards have mutated into this cartoonish level of magic use not seen in traditional fantasy, but for decades, Wizards in fantasy have long since left D&D Wizards in the dust with their quaint notion of limited spells per day.
Yeah, I don't really see it for high level D&D Wizards. The point wasn't that there aren't fantasy wizards that have more power, have more always on spells, etc.
The point was that high level D&D wizards have a cocktail of traits you don't see much outside of supers -- reliability, high frequency, no cost, power, and incredible versatility of effects.
Harry Potter -- certainly reliable, high frequency, and no cost. But power and versatility doesn't seem up to par. A lot of effects seem dependent on items, some artifact like - flying, teleporting, invisibility, time travel, etc. Many of the frequently used spells are things like levitation, disarm, and paralyze.
Dresden - didn't get past book 3 partly due to the lack of defined magic system. He's too drained to do magic. He's too drained to do magic. No, wait, he digs deep and can do magic! So certainly not reliable in the same way. There is a cost in fatigue although it disappears whenever it mattered so maybe not But regardless, I did not read those three books and think " this is certainly high level D&D wizard level power and versatility". No way.
I haven't read Wheel of Time but going insane is a high cost. A more modern one Broken Earth magic is powerful but you turn into a stone eater -- high cost. Almost all the "chosen one" type magic users have some kind of powerful cost (to themselves or others) or drawback. This isn't leaving the D&D Wizard in the dust if you go insane, lose your soul, inflict high collateral damage on the world, etc. That's high cost for power.
It's true Dr. Strange can basically just do anything so it is more extreme than the D&D Wizard, but I still maintain the D&D Wizard is closer to this than most of the fantasy wizards I've read or watched.
no cost
high versatility
high reliability
not unlimited but pretty high frequency per day
high power
Most fantasy wizards don't get all 5 of these.
If you wanted to more appropriately map modern spellcasters onto D&D, you'd have to make the top tier spells require long rituals, pacts with eldritch beings, or access to magical relics to be enabled, but then make the lower end spells essentially at-will or encounter powers, so people are throwing out lightning bolts and magic missiles many times per day if required.
Yes, that could be a way forward.
I'd also like a bit of limiting of versatility per individual caster.