Doesn't ASML have Engineers who work with TSMC to make sure their complex machines works optimally within their manufacturing facility? How is this any different?
Yeah, this is a totally normal thing that businesses do (particularly for complicated technology). However, the dysfunctions of many companies make these kinds of people far more powerful than they should be.
Yes but when you buy any billion-dollar machine you are committed to a long term relationship with the vendor. OpenAI is more akin to a cloud service. In a few months you may wish to switch to a different service. Asml customers operated on decades, not months.