Why can't we find some cheap LED lights in stores worldwide?

LEDs are cheap to make, save electricity (over 10 nuclear power stations could be shutdown if we all used LEDs) and last years longer than the alternative. Why are they so rare? Does the industry (GE, Philips; etc) prevent their introduction to preserve their margins on the supposedly "light-saving"... show more LEDs are cheap to make, save electricity (over 10 nuclear power stations could be shutdown if we all used LEDs) and last years longer than the alternative. Why are they so rare? Does the industry (GE, Philips; etc) prevent their introduction to preserve their margins on the supposedly "light-saving" fluorescent bulbs?
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