Explanation: The Wizarding World's Economy (Author's Note, 18/05/21)

Since this would run too long, I'm dedicating a separate chapter to the author's note:

Early on, some readers asked why the family business wasn't expanded into the clothing industry. The answer was simple: the wizarding world's economy was different from the Muggle one.

There was no assembly-line industry in the wizarding world, nor was there any need for it. A custom-tailored outfit could be completed in a short time with a single spell, so why bother with assembly lines? As for food and drinks, livestock, vegetables, and fruit could all be magically accelerated—or even mass-produced directly with the Engorgement Charm, Gemino Curse, and Refilling Charm.

The truly profitable businesses in the wizarding world had always been products that required exclusive techniques to make, such as wands, Broomsticks, and Anti-Dizziness Bracelets. Readers could compare the prices of food and brooms for themselves.

One cup of Butterbeer — 2 Sickles (and it could be refilled endlessly with the Refilling Charm)

One chocolate bar — 1 Sickle

One of every food item on the train — 11 Sickles + 7 Knuts

The cheapest brooms, the Cleansweep series—even after Ron became a prefect, Molly still had to think it over before buying one.

The Firebolt cost anywhere from 200 to 999 Galleons (that was only the initial price; it had to go up again after the goblin strike).

In order to prevent their techniques from leaking out, the owners of these businesses had to personally take part in the manufacturing process. For example, Skylar had to personally inscribe Ancient Runes onto the Anti-Dizziness Bracelets, Ollivander personally made wands, and the Weasley Twins personally made joke products.

So having the protagonist start out by getting into the clothing business would be completely putting the cart before the horse. That time would be better spent increasing his strength. Only once his strength had improved would he consider branching into fields such as business and politics.

The author believed that even wish-fulfillment stories needed to be reasonable. I've read quite a few fanfics too. Think about it: you're an ordinary lower-class Chinese Muggle citizen who died suddenly from overwork and transmigrated here. Suddenly, you're fluent in English, suddenly you have business talent, and you learn magic especially quickly as well—don't forget that proper magical pronunciation is important. Is it reasonable for you to accomplish everything that a normal person might never achieve in their entire life before turning seventeen—or even fourteen?