Addiction Markets

  But if you want to outlaw this harmful activity [licensed gambling], you have to find a way to replace 6.4% of Maryland’s budget, which is slightly less than the entire amount the state brings in from corporate taxes.

A fraction of the proceeds of losing bets from a fraction of Maryland's citizens contributes almost the same to state services -- EMS, education, road maintenance, etc -- than the total corporate taxes levied on all businesses.

Do I misunderstand, or is this just actually incredible?

I think this is a pretty good approach actually. Give people the freedom to gamble, but discourage it through taxes. It's best to tax things you want to discourage. So it's preferable to tax gambling rather than productive economic activity.

Related concept: https://en.wikipedia.org/wiki/Pigouvian_tax

Taxing the dopamine thing does not discourage the doing of the dopamine thing. Just penalizes the addict and worsens their position.