The British telecoms firm is actually worth much less than the scrap value of its copper wire network:
British Telecom is, as a telecoms company, worth minus £30bn. Yes, that’s a negative number there. And yet it is literally sitting on top of billions in assets.
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Ten pairs of copper cabling weighs around 132kg per mile. Which by the miracle of multiplication can be seen to be about 10 million tonnes of copper. Which, at current LME prices of just over £5,000 a tonne, is £50bn.
BT’s current market capitalisation is just north of £20bn. So, as an operating telecoms company they’re worth £30bn less than the mountain of copper they’re sitting upon: that is, they’re worth less than the physical assets or they have, as a telecoms company not a mountain of scrap copper, a negative value.