I don't think it is accurate to say that half of women would make that choice. The damaging point of these behaviors is that people begin to assume this is normal when it is not. That is the real tragedy for Google.
If you go asking women, if they'll sleep with you for promotion. Answer will be a big NO.
Consider asking them who already faced this in real life, what did they choose?
I want companies to tackle these dynamics, so we've a much safer and fair playground for everyone.