Crazy thing. I wanted one so badly at launch. Now, I don't really want one anymore. I think it would just gather dust.

Any numbers on how many they've shipped so far?

I think it could easily sell 10 million just in the initial few months/holiday season if they had the supply. If it were to stay on the market for another two years I could see 30 million as people randomly see it in stores and are like holy crap that looks awesome. It's at a price level where people would pick it up on a whim.

What if “hot cakes” weren’t supply constrained? I keep hearing people talk about how well they sell, but I have never once seen them stocked in stores.

Then multiply it by 5

i could see it selling maybe 30 million. you have to remember that it isnt a full console, so it wont have as big of a market. but if they were readily available for anyone to purchase i could see it selling about 30 million

California alone would buy 5 million. Remember it’s only $80 and everyone loved the Super Nintendo.

I hacked both of mine and loaded in a ton of great games.
I have played it more than the Xbox One X.

I have a perfectly fine SNES along with most of the best games on cart that I can play anytime I want and even I wanted one. But, like you, that passed rather quickly when I couldn't buy one for retail price. Then common sense hit further and I realized that input lag is still a thing and said fuck it completely. 

Just wait till all countries add them to their gift bags for their athletes at the Tokyo Olympics.