The tricky part is, of course, that legitimate economic efficiency arguments can be made for allowing the highly productive to bequest their incomes to beneficiaries who are mere owners (to encourage the originators of the wealth to continue to be productive). But in practice, that leads to concentration of resources in the hands of people who are not necessarily as productive as their predecessors
The other confounding factor is that "production" itself in dollar terms is not some immutable variable, but the price-system reflecting the aggregate desires of all those people holding resources. As ownership of resources becomes more concentrated, the measure of income from production becomes less an ability to meet the needs of wider society through effort and skill and more the ability to secure the patronage of a member of a diminishing number of superrich.
The relationship between the basic economic concepts of productive efficiency (viz. creating as much value as possible) and allocative efficiency (viz. ensuring resources are exchanged to permit everyone to obtain as much value as possible without someone else having to subsidise it) therefore exists in tension.