I can't imagine spending this time for someone I don't know, someone who never ever bother to talk to me but demanded them.
Few years ago I have spent few days of work planning project with people with whom I had interview - just because I started to like them in 10 minutes of the interview. I ended up working for them for the next few years and some of them are still my close friends.
I could ignore the offer, decline it (as I did) and live on. But if nobody will tell those guys in fat cat corporations that they are wrong - they will continue to think and treat people as "resources", not persons.
You could be ok with that - they do have great salaries, career opportunities etc. But accepting this treatment as a norm is unthought to me. It's not about ego, it's about some tiny respect of a human being for a human being.