@Shilohx
No, it’s simpler than that.
Putin is buying their loyalty with money gifts and by making them exempt from allegations of corruption.
MPs become forever indebted to him personally and keep propping up his fascist regime in return.
They all think that by erecting a wall between themselves and the piss poor population they’ll be forever immune against anything.
Well, the population is used to behaving slavishly towards state officials for centuries, so it’s all going to work.