Its silly to think that steam cant edit/view these cloud saves, because theyre linked to a steam account. The steam accounts are all linked to Them. The save games cant really contain any data except the games save state right? So what would be the problem? Its not like i recommended steam change peoples save games, just simply shoot a copy over to firaxis.
If steam is willing to host a users save game data on their servers, and its a steam-mandatory game, i would suspect they have the right to do whatever they want with those save files.
Heck, some free image hosting sites claim they own the rights to the photos you upload to their servers. I dont think its right, but i think steam passing cloud saves to the game producers, would be a good thing, no? Isnt the point of steam to make the lives of the devs easier (something about not having to write mp save time yadda yadda)?
From firaxis' point of view, if steam doesnt allow them the rights to these cloud saves, maybe steam isnt exactly a good choice for further products.
But hey, what do i know? Was just an idea i had, figured id post it here, and if someone who cares or has ability to pass the info on, they can.