You are just advancing my point. I agree with what you say, but my point is that what is taunted as egalitarian fair system - “once you are in, it’s easy to transfer, just click the Transfer button” in reality doesn’t work like this at all.

Ah right, if your point is that you can't just transfer to a good team when you get in I agree, but it sounded as if being friends with the right people was required. It is all up to manager discretion, if they like you for any reason (beer or skills) you are good. Skills are usually easier to work with since it can be used to ask for more headcount while nobody would give you headcount so you can hire your beer buddy (I hope...).