The duct tape parts are probably a fantastic moat in itself - ASML's institutional knowledge of where and how to apply such duct tape solutions might be the most difficult to replicate by another company.
It's like only a couple companies know how to build large jet engines that don't melt when the heat inside them is way above the melting point of their materials...
Yep. The organization is as duct-taped as the machines they build and it’s kinda mad.