> It's a long tail that has to be chopped off Those ASML litho machines are astoundingly complex, with more parts and a more complex supply chain than a Boeing

> It's a long tail that has to be chopped off Those ASML litho machines are astoundingly complex, with more parts and a more complex supply chain than a Boeing or Airbus commercial airliner. So many parts that each part and subassembly must have an outrageously long mean time between failure, something like 16 years, in order for the entire machine to be sufficiently reliable. No wonder only one company is able to make them.