This is a famous quote from Douglas Adam's The Restaurant at the End of the Universe:
Many years ago this was a thriving, happy planet – people, cities, shops, a normal world. Except that on the high streets of these cities there were slightly more shoe shops than one might have thought necessary. And slowly, insidiously, the number of the shoe shops were increasing. It’s a well-known economic phenomenon but tragic to see it in operation, for the more shoe shops there were, the more shoes they had to make and the worse and more unwearable they became. And the worse they were to wear, the more people had to buy to keep themselves shod, and the more the shops proliferated, until the whole economy of the place passed what I believe is termed the Shoe Event Horizon, and it became no longer economically possible to build anything other than shoe shops. Result – collapse, ruin and famine.
Are there real world examples from history where a society's economy has become so mono-industrialised that it collapses? Does this situation have an alternative (more serious) name in economics?
I'm not sure if this will be a constructive question. A potential edit could be to ask if something like Ireland's potato famine is an example of the shoe event horizon.