That's because they weren't fooled. There is something "in it" for them. That's all they care about.
I got a big Obama supporter to distill it down for me. I said explain it to me in the simplest of terms.
They said:
"I'm selfish."
End of story.
You are right. What’s theirs is “theirs” and anyone else’s work/savings/property is to be given up/taken/stolen.