How much do you need for your children to not work or provide complete financial freedom (i.e. can buy a home, raise a family, etc. without thinking about the income of their job)? That is the "generational" in generational wealth.

You need more than $1.5m today should be $6m by the time they're 20. Depending on inflation, cost-of-living, tuition, etc. that might be enough.

People talking about generational wealth aren't saying, "what if they live a frugal life in the Topeka suburbs."