Does the world have an oversupply of ESP32/RaspberryPi/3D printers/similar but not enough use cases?
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3D printers are not the revolution that they looked at first. But after the initial hype, they found their niche and they are strong in it.
Nowadays I even dare to say that it's more useful to have a 3D printer at home than having a ink jet.
I think it's easier to live without one today, as many use cases for printing at home were replaced by just using a smartphone and a PDF reader...