system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does Steam earn profit from transaction fees on their user based market if the money is considered "steam dollars"?

How would they go in return to make profit and turn it into real legal currency?
gpt
It's incorrect to think that Valve is making profit from the transaction fees.

Valve makes 100% profit on all Steam dollars bought.  Period.  They have no real value so all that money goes directly to Valve.

Valve *destroys* a percentage of Steam dollars with every transaction - this is the transaction fee.  Destroying the virtual currency just serves to prevent hyper inflation and ensure new dollars have to be bought.