As for who the employer's wealth, I don't think that should have anything to do with how staff are compensated. The employer's personal wealth doesn't have anything to do with the value of an employer's labor, which is the only thing that matters when evaluating if compensation is fair. If you're factoring that in then there may be elements of resentment and/or jealousy at play. You should get compensated for the value you produce, full stop.
You’re entitled to your choices obviously, but for me personally it seems absurd that a bricklayer would have to wait until a building is finished or sold to actually get paid. He has no stake, he’s no investor, so it’s on his employer to pay him enough for the whole duration of his employment regardless of the level of financial success of the entire project.