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As we all know, mining is now completely centralized. Big money buys expensive equipment in the form of ASIC / GPU / FPGA devices and deprives everyone else of the right to participate in the issue of cryptocurrencies.
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Pools are centralized, but one can switch pools easily.
No one has a "right" to participate. If you have something of value to offer, then it is a permission-less entry, if you have nothing of value to offer, no one should be forced to let you participate at their cost. If you want to mine, earn money and buy miners.