When economists talk about rents and rent -seeking behavior, that's somewhat different from the common meaning of "rent". So for example you can get a monopoly rent by having all your (smaller) competitors regulated our of existence even if nothing is being rented in the traditional sense, while a landlord renting out properties in a healthy competitive market won't receive any economic rent.
Example: a retiree, using his retirement savings, purchases an apartment building. Now, he has a steady income, that he can use to pay for his expenses indefinitely -- as opposed to knowing he will run out of money at some point. The tenants benefit as well, because they have little savings, but an income instead (because they are still able to work, as opposed to the retiree). By exchanging income for wealth, the tenants and the retiree mutually satisfy each other's interests without harming anyone.
I'm not talking about rich retirees. I'm talking about hundreds of millions of people all over the world, who've saved up something and therefore, when they come to the point where they are unable to work, they purchase an asset with a yield -- it can be anything: a bond, shares in companies that rent out apartments, stocks, land lease etc. -- in order to convert their savings into an income. The more your savings, the higher the income, but when you are no longer physically able to work, you have no choice left (unless you're lucky enough to live in a country where there's someone to help you).
Also, who do you think is the recipient of mortgage payments? People who've deposited money with the bank in question, eg. retirees. A mortgage is an exchange of wealth for income using a bank/credit union as an intermediary.
If people didn't have the right to seek rent from the houses they build or inventions they come up with, why would they expend the effort in the first place?
(note, I don't take that view exactly, I believe motivation comes from a whole lot of places)
This is a simplistic view that is demonstrably incorrect. For example, I rent out part of my house but do so to help pay the mortgage. So technically I do not fully own the property I rent. Furthermore, maintaining a property and assuming liability are not free.
It seems like you are most upset about people who inherited money using it to their advantage. I think the biggest problem is not poverty but how the middle class is forced to pay for it. The powers that be tell the middle class that it is the lazy poor people's fault so they get the blame while the rich get richer.
The act of building housing takes significant resources: lots of labor, purchase of physical building materials, purchase of equipment. The investor takes on the risk that pouring money into construction efforts will ultimately be paid back in the form of valuable housing that can be sold or rented.
If not for the returns provided by rent, no one would put up the investment in order to build more housing.
(just to clear things up, the act of charging rent is different than what economists refer to as rent-seeking behavior https://en.wikipedia.org/wiki/Rent-seeking)
but in this case if I take on the risk of investing in real property, and of the risks that comes with that, then I deserve fair market rent on that property. and if over decades I accumulate multiple properties that produce in your opinion large amounts of income then I deserve that, too. and if I leave these properties to my descendents, then there's nothing inherently wrong with them owning those properties and getting that income, is there?
using your logic, you could also ask the question if people who cash out in IPOs "deserve" to become millionaires overnight.
i understand your argument about compensating for risk, it's not dumb and not outrageous, but i'd like to challenge it to some degree. hopefully it's fair to assume that risk is simply the financial risk, i.e. how much you could lose, and at what probability? in that case, would it be fair to say that any positive expected value investment would result in undeserved profits? in other words, wouldn't there be cases where the rewards outweighed the risks?
if we accept that narrow definition of "deserve", then i guess it would be my job to argue that the three categories i mentioned show an imbalance. or course, knowing true risks is impossible, but you might be able to make a pretty good case in some instances. but i really dont know enough to do that.
but, i think that formulation doesn't really fully resonate with the way most people intuitively judge desert.
six people ante 200k each, then roll a die. who ever had the number that is rolled takes all the money. does the winner deserve the money more than the losers? in that example, sure, i think most people would agree, its a game of chance and they all entered willingly. did he "earn" it? ehhh, i guess?
now what if six people go off and build houses for a year. at the end of that year, they get paid proportion of the sum of all houses value based how many sq feet of house they personally made? someone might build a really shitty but huge house. would they deserve their pay? "but the rules were pay based on sq ft"... well, sure, but the spirit of the rules? probably the spirit is to pay people based effort, skill and product, so as to incentivize them. so maybe a flaw in the incentives then? i realize this is meandering from my original point... but i think its on us to do the right thing, not rules to force us to. ok, anyway... i think in this case most people would probably say this person doesn't deserve all the money because the house they built is so shitty, and they just found a loophole and exploited it.
that is all just a very long winded way of saying that i think desert is based on more than explicit contracts.