Only if you remove real estate income. A great many of the top earners (say 100-200K/year) are pumping their money into property via mortgages on their houses.

Only if you remove real estate income. A great many of the top earners (say 100-200K/year) are pumping their money into property via mortgages on their houses. After say 30 years of work, what percentage of their net wealth will be from salary and how much from property appreciation? Then in their 30+ year retirement, how much will come from investments stemming from that original salary?