Protectionism is just wealth redistribution from the consumers to the suppliers. Most importantly it's wealth redistribution proportional to consumer spending.

So you take less (percentage-wise) from the mega rich than you do from the middle class because large capital doesn't spend a large percent of its capital on consumer goods. That's regressive.

Why don't you go take the money from the rich instead of coming after the middle class? You want the guy who's making $50k a year to pay $200 more for his iPhone and you want the guy making a million a year to do the same. Both of them are only going to own the one iPhone. Straight up regressive.