Non excludability&property right- good answersWatch
Most goods are private goods which are excludable. the owner of provate goods such as fruit on sale in a greengrocers shop can stop gaining the benefits of pples and pears in the sop uncless customers pay for the goods. however pure public goods such as national defence are non excludable. if provided for one person they are privded for all. ither people cannot be xcluded they can free ride ie benefit without paying.
shopkeers own the property rights over the goods they wish to sell.selling the goods transfers property rights over the foods they wish to sell. Selling the good transfers prperty rights to the new owners.By contrast, outside of national fishing limits, nobody owns the fish swimming the ocean so nobody and can excerise proerty rights over fish stocks. without international law being changed and then enforced and policed is is possible to prevent fishing boats fishing boats catching fish for free. the oceans fish are therefore largely non excludable. But though non excludable, ocean fish are certainly nowadays exhaustible. overfishing deplets the fish stock, perpahs eventually below a critical level beyond which the fish stock cannot replace itself. however this was not true in the past when fishing technology was primitive and there was a super abundance of ocean fish.
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