So it means that chinese SMIC announced '7nm' implies they have EUV working?
This is really more of an engineering problem, you need more cycles for quality and reliability. But it's not something unsurmountable. Intel had no reason to try hard enough, Intel is never going to get sanctioned.
'Necessity is the mother of all innovation' might come to play here. If it comes down to living vs dying, people go to no ends to make things happen.
The nm measure is a marketing tool. Intel nm is 'larger' because they were measuring gates differently.
I only take nm claims as comparison of products of same company.