Judicial reform bills have tried to address the issue, but these bills have very little chance of success in the current political environment.
From 2024:
https://www.vanhollen.senate.gov/news/press-releases/van-hol...
Looking it up, Supreme Court Justice Abe Fortas resigned from office because he accepted $20k from a chap who he was judging a case on. It reminds me of Babe Ruth's life time earnings being under a million, while Shohei Ohtani's annual pay rewound to 1931 dollars is some 3 times that.
Here's the source I'm sure you'll want: https://www.cnbc.com/2024/06/06/supreme-court-justices-milli...
It's a big surprising thing to hear about for the first time! Glad to help you become familiar.
https://www.cnbc.com/2024/06/06/supreme-court-justices-milli...
Etc etc, and that's just one of them, and that's just what's public.
Republicans simply suceeded in their plan to take over the federal judiciary branch from the top, in great part with the help of the Federalist Society.
The only answer if Democrats ever take power back is to pack the court now, no amount of unwritten rules following and norms respecting can work against people who abuse the system and packed the court themselves (by unjustifiably blocking candidates nominations which would have balanced the court, for years)