The given model implies that this process gradually concentrates wealth, or at least some aspects of wealth. You will leave your property to your relations, of whom there will be fewer in the next generation, and so on. The normal counter being that the immigrant worker population will take a generation or two to assimilate at which point they will have a stake in how wealth is disbursed.

We live in a much more complicated world, especially in Europe and the UK, but essentially that has been the nub of all of our respective policies.

Of course, there's always the cat's home or equivalent....but most folk will leave the wonga to their relations. The established classes always have the best support networks: odd that.