Comment by mw888

Your argument of course sounds nice and fails under your inability to define "gambling."

I view favored house-odds, on arbitrary games or not, as unethical and predatory. This is the classic casino slot machine and related. However, Poker doesn't have house odds, it is a fair game.

Move one level up: prediction markets don't have house-odds if implemented plainly. On non-game events, they also have a positive externality, which already contradicts your claim: prediction markets predict quite well.

Yet another level up: investing in the stock market. The same authentic gambler who burns money into a slot machine can play the stock market to similarly disastrous ends. But if you define this as gambling and want to outlaw or limit it to 'professionals' then you bar people from capital markets which is absurd.