Good for them, but I doubt this will be the last we hear about this especially with the current US government. ASML was only permitted to acquire US company Cymer (the actually valuable EUV light source technology) back in 2013 under a strict technology sharing and export control agreement. The Netherlands blocking a US acquisition due to technology control concerns is sure to ruffle some feathers in Washington.
This is a huge detail that further complicates the picture, ASML's lithography technology heavily benefitted from United States DOE research: > In 1997, ASML began studying a shift to using extreme ultraviolet. Two years later, it joined a consortium, which included Intel and two other U.S. chipmakers, in order to exploit fundamental research conducted by the US Department of Energy. Because the Cooperative Research…
Not just heavily benefitted. The entire wafer-making technology is the result of US government funding and research. There's a reason why Cymer continues to operate independently in San Diego instead of by ASML in Europe. That was mandated by the acquisition agreement. The R&D and manufacture of the EUV light sources had to remain in California. ASML in the Netherlands is just the final assembler of the machines.