jabberwalkee_
Goodie hut resident
Furthermore, if the game will be patched in the event that Steam is deactivated, will such a patched version also be offered in the event that a purchasers Steam account is terminated by Valve (particularly in instances where the reason for termination is entirely unrelated to Civilization V)?
I can answer the first part of this question. Valve have said
"Unless there was some situation I don't understand, we would presumably disable authentication before any event that would preclude the authentication servers from being available.
We've tested disabling authentication and it works."
But, in the unlikely event valve goes broke AND nobody buys steam AND nobody turns it off, you can almost guarantee that a hacker (or more likely an ex-employee) would figure out a way to do this given that there are now over 1000 games on steam.
Not a concrete answer, I realise, but in reality it seems impossible that a situation where you would be unable to play steam games for that reason would come about and if it did it wouldn't last very long.