Hey, look at that, Steam is now the service problem.
Way to go AusGov. Pretty likely my Steam account is over 18. FWIW can still play owned games (for now).
ETA: I stand corrected on the AusGov thing (sort of, rather age checking wasn't there at all personally, and the way they implemented it makes abuse likely by leaving it to the corpos, Steam's not getting my license either).
Definitely a Steam is now the service problem (a reference to Steam calling piracy a service problem, live long enough to become the villain...) given history in the UK though.