Just as our predecessors evolved age of consent laws, eliminated legal slavery, and developed laws against individuals murdering each other, modern human society needs to evolve limits on property rights,
Those limits could be at 100 million dollars or whatever (age of consent laws and speed limits can also vary by jurisdiction), but you cannot by worthy of the protection and acceptance of human society if you do not accept that there are limits on the property that you can claim for yourself.
This is as obvious of a moral/ethical concept as the idea that murder and slavery should be illegal.
The only reason this doesn't seem exceedingly obvious is the abuse, theft, and extreme socioeconomic oppression inflicted by the ruling capitalist/kleptocrat class on the public and working classes to keep them in line.
People claiming more than ~100 million in property rights deserve to be kicked out of human society at least as much as the people raping individual children or enslaving individual people.
Question: “But what about Elon Musk? Dude is driving the species forward with electric cars and Space X? Would these types of projects not get done if billionaires didn't exist?”
Answer: Public benefit corporations also exist, and the human species doesn't have to be driven only by the profit motive. Beyond that, a system in which billionaires exist alongside massive, needless (systemically and deliberately created) poverty, keeps the collective intelligence of the species much lower than it needs to be, which is one of the main things holding back the human species.
And beyond that, for every “ethical” billionaire, there are a dozen more Kochs, Mercers, Murdochs, hedge funders, and other kleptocrats lobbying for mass human enslavement, abuse, poverty, and stupidity “behind the scenes.”
https://en.wikipedia.org/wiki/List_of_wealthiest_Americans_by_net_worth
No one should consent to a system of unlimited property rights any more than they should consent to a system of unchecked, unlimited political power.
The capitalist/corporatist/kleptocrat media will never admit the truth about this and will do everything they can to lie, distract from, and suppress the truth.
The truth is that the ruling capitalist/kleptocrat class is socially murdering the public and the working classes, in large part through the political class and the political system that they own.
This is as much of a moral crime as raping or killing an individual child, but because the so-called justice system doesn't recognize social murder as a crime, the ruling billionaire/kleptocrat class gets away with abusing and murdering the public and working classes with no recourse.
https://bulletin.represent.us/u-s-oligarchy-explain-research/
The policy question of our time that the capitalist/corporatist/kleptocratic media can barely ask, let alone answer correctly, is “Should there be limits on property rights?”
The answer is yes, and it's time for the public and working classes to build the power to fight the abusive ruling class, establish those limits, and re-write the “social contract” for the 21st century.
Property rights beyond a reasonable limit should be aggressively nullified, as should any social contract that protects the obscene property rights of billionaires/kleptocrats by subjecting the public to mass enslavement, abuse, and exploitation.
“Power concedes nothing without a demand. It never did and it never will. Find out just what any people will quietly submit to and you have found out the exact measure of injustice and wrong which will be imposed upon them, and these will continue till they are resisted with either words or blows, or with both. The limits of tyrants are prescribed by the endurance of those whom they oppress.” – Frederick Douglass