Which is fine by me - I consciously choose to boot into my gaming PC and start up Steam. My gaming friends are a small fraction of my friends. And spending habits are pretty easy as well - basically whenever there is a major Steam sale. And you are still able to play a lot of games offline.

My point with the above is that the risks are far less than with a general purpose operating system. How can I ever trust Windows as a platform for running the Tor Browser on? How could I trust any closed system?

How many games are exclusive to Steam and how many games are exclusive to windows?