Originally Posted by
sionide
Yes, it is an abstract scenario without a global trading system like you said, so we really won't need to worry about it.
But to indulge this senario, nails in this case would be hard to do, since nails are relatively plentiful. The arm of this tribe would have to be far reaching (again nearly impossible without a global trading system and fast travel), and more new nails can not turn up faster than this tribe could aquire them. Furthermore, the tribe would have to have a great deal of already obtained resourses to corner the market of nails, because as they are buying more nails, nails will be worth more and more so they will need to pay (trade) more for them at higher prices/items.
However, since it isn't hard to get say 100 nails in 1h, there will be a constant influx of nails to balance their intake and hence this scenario will not happen to nails. However, a type of this monopoly actually does exist, and most people don't know about it. Diamonds aren't a rare item (think about it, it's made from carbon, and carbon is one of the most plentiful elements on the planet). However, Da Beers, does exactly that. When a new diamond mine is found they will buy it out to keep diamonds rare. This is only possible, because of the global economy and fast travel.
On something harder to obtain, for example saws, this could possibily happen. Especially, when/if (I am guessing "when") deteriation of items occurs in game. Saws will become even rarer than they are now, and a tribe or groups of tribes could hoard all the saws and just sell the finished product (i.e. medium wooden handles, etc). This I could see happening, and medium wooden handles could be the currency, if and only if the leader of those tribes with the saw monopoly all agree to a set value.
Again, it will be interesting to see what will happen. I don't fear anything will happen to nails, because they are are plentiful and easy enough to find. The saw analogy on the other hand...could happen in the current state of the game (however, people could then just keep rerolling till they get chars with saws, so I guess that particular example will not work either, but the premise is still there).