"Well, if you could sell snide you would have a nice little side hustle;)"

“O wad some Power the giftie gie us, to see oursels as ithers see us!"

I thought your comment was snarky as hell.

OK. We can disagree on the impact. I think it would be substantial. You don't. But it has nothing to do with the behavior of the non-rich but rather the fall-out from the behavior of the rich.

You mentioned venture capital. Those guys are part of the Rube Goldberg machine. At the end of the day, the tax on gains affects the price of risk capital, and the price of capital affects the formation of businesses. Maybe it's too easy now, and capital gains taxes should be higher. Maybe it's too difficult and they should be lower. My point is that the revenue effect is probably the least important aspect of the idea.

We probably define "fiddle" differently. The changes over the past forty years are fiddling. This one looks like a cello, if not a double bass.

I agree that the outcome is not obvious. I disagree that your initial comment didn't imply that it was obvious that the proposed change would have no important effect outside of raising more revenue from the rich.