>> Interviewers don't care about how much money the candidates have because...

No, hang on, I get what the OP says and it's a reasonalbe assumption. In large companies with rigid hierarchies, people will often be sort of subtly flash (!) with their money, because it basically marks their position in the hierarchy. You can see this in the clothes people wear, their cars obviously, their phones also obviously, the other tech they proudly display, discussions about where they're going for holidays, or for the weekend etc etc.

If you're getting hired in a company with that sort of culture as a recent graduate, say, coming from a less affluent background, then it's easy to feel somewhat excluded.