This is the fact, and I would say that almost no one is immune to money offer. (You have to be very financially secured. But then, you are probably from the similar class as corporate people. -> simulate level of greed)
If you (as governmental employee) have some issue to solve, e.g. alimony or faster mortgage repayment, you are vulnerable… and you have to have very strong conscience not to accept any “services”. It is similar to be strong not to ear sugar or fat-loaded chips or drinking…
But you are free to give us an example of a planned economy that worked properly and brought freedom and prosperity to their citizens. Just one single example will suffice.
P.S. I see the downvotes, but I don't see a single example. Just one...