You can apply this elsewhere - like people who are born into wealth. Those who are given the riches from the start are less likely to develop a strong work ethi

You can apply this elsewhere - like people who are born into wealth. Those who are given the riches from the start are less likely to develop a strong work ethic/will feel a sense of self-entitlement. This goes beyond immigration - it might better be imagined as a genealogical luxury work-ethic bell curve - one starts at nothing, and works incredibly hard to get to the top for their family, and most of the time, the gene pool begins returning back to 0 as it comes to work ethic - or at least until the pull of said wealth dissipating begins pulling it back up.