Interesting point - I would originally agree with the other posters that said Gaming is different because there is no chance of making back your money, but you are correct, in a lot of games with markets and currencies, there is a way to make money from your time spent gaming.
I guess this would only be an issue if the purchase-element manifested directly in a way to make money? For example with Team Fortress 2; you can buy keys to unlock the item crates (which deliver a player a single new random item) - but you can't buy the item crates themselves - and you can't buy an item to make the crate's randomness any more favorable.
I guess this would only be an issue if the purchase-element manifested directly in a way to make money? For example with Team Fortress 2; you can buy keys to unlock the item crates (which deliver a player a single new random item) - but you can't buy the item crates themselves - and you can't buy an item to make the crate's randomness any more favorable.