I really like the way you framed it. I've never really been against a wealth tax but making it equivalent to income feels fair to me. I don't think the math works out with rates where they are today, though.

I guess the simplest approach is, if you're making money, it should be taxed fairly, regardless of how you're making it.

The trick is clarifying that "making money" means "increasing your wealth". Currently there are many ways of increasing wealth that don't "count" as making money.