"Saying the perks are some underhanded strategy to keep people around hugely insults the intelligence of the people working here or at any other office for that matter."

I believe that the original motivation for offering free lunch was a calculation WRT how much time people 'wasted' driving to and fro a restaurant, and how much Google could/save profit by having the perks.

I do not believe Google is entirely nefarious with this culture and perks etc. - but please do not be so naive - it's a corporation, just like any other. Nearly everything they do - even internal practice - is oriented towards profit.