Do you believe it's possible that everyone is treated like royalty? And if not, wouldn't it be better if royalty was treated like poor people instead of having a multi-tiered justice system where the fairness of the system depends on your class?
There is also a third option (or forth if you count the status quo). We could treat the rich the way we currently treat the poor and vice versa (an option I like to call eat the rich). IMO this is the only fair option, the rich have it good as is, they have an enormous amount of power that they treat with impunity, never taking the responsibility that comes with it. They have the option of abandoning their wealth (unlike the poor). It is completely fair if the justice system were to be used disproportionately against them.
For some definition of fairness, yes. I don't fully disagree since wealth makes it trivially easy to be lawful, nothing you do is because of needs, it's purely based on wants/desires. It does come with some problems, and I doubt it'll work long-term, but it would be interesting to watch.