That's not why, that's because steam (apparently) sold The Sims 3 copies without actually buying enough keys from EA. They said "there were more sales than expected" and that they will buy new ones and share with us as soon as possible... But we can't play until that.
giraffeteapot, Where did you find this information? I would like to read it through there too please.
Found where Giraffe got that info, it's on the steam support stuff if you dig enough.
https://support.steampowered.com/kb_article.php?ref=2204-OPGC-4862&l=
We can hopefully assume it's the fact that steam just doesn't have enough keys for all of us.
