7% annual compounding is a decent floor, but it's an iron law that sophisticated investors can't outperform. AMZN is has certainly compounded much faster than 7% per year over the last two decades, and access to that investment was democratized the entire time.
Wealth isn't morality, being wealthy isn't a sin, and wealthy people's offspring have no burden of justification to "deserve" their wealth.
Insisting otherwise is a direct attack on the fundamental right to private property that underpins western civilization.
When the US government provides the same equal protection to all citizens, including those who contribute nothing but violence and suffering to everyone around them at the expense of taxpayers, what horrific atrocity are Jeff Bezos' children of that warrants confiscation of millions or billions of lawfully and voluntarily acquired wealth?