回复：BTC 漏洞？（针对 BTC 系统的大规模攻击。真的可行吗？）
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楼主描述的做法叫作“垄断市场”。当有人试图买下全世界某种稀缺资产的全部供应量时，他们买得越多，价格就涨得越高。到某个时候，价格会贵到他们再也买不起。对那些原先持有这种资产的人来说，这倒是好事，因为他们可以用高得离谱的价格卖给垄断者。随着价格不断上涨，有些人会一直等待更高的价格，拒绝出售。
亨特兄弟在 1979 年试图垄断白银市场，结果出了名地让自己破产： “纳尔逊·邦克·亨特和赫伯特·亨特兄弟在 20 世纪 70 年代末和 80 年代初企图垄断全球白银市场，一度持有全球可交割白银一半以上的权利。[1] 在亨特兄弟积累这种贵金属期间，白银价格从 1979 年 9 月的每盎司 11 美元上涨到 1980 年 1 月的接近每盎司 50 美元。[2] 两个月后，白银价格最终暴跌至每盎司 11 美元以下，[2] 跌幅大多发生在后来被称为‘白银星期四’的同一天，原因是交易所修改了以保证金购买大宗商品的规则。[3]”
http://en.wikipedia.org/wiki/Cornering_the_market
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What the OP described is called "cornering the market". When someone tries to buy all the world's supply of a scarce asset, the more they buy the higher the price goes. At some point, it gets too expensive for them to buy any more. It's great for the people who owned it beforehand because they get to sell it to the corner at crazy high prices. As the price keeps going up and up, some people keep holding out for yet higher prices and refuse to sell.
The Hunt brothers famously bankrupted themselves trying to corner the silver market in 1979: "Brothers Nelson Bunker Hunt and Herbert Hunt attempted to corner the world silver markets in the late 1970s and early 1980s, at one stage holding the rights to more than half of the world's deliverable silver.[1] During Hunt's accumulation of the precious metal silver prices rose from $11 an ounce in September 1979 to nearly $50 an ounce in January 1980.[2] Silver prices ultimately collapsed to below $11 an ounce two months later,[2] much of the fall on a single day now known as Silver Thursday, due to changes made to exchange rules regarding the purchase of commodities on margin.[3]"