US narrative on this topic is reaching grotesque levels. Ok, being the world's boss, they never needed to be smart in writing realistic narratives to start with, but here we are reaching new lows.
1. Banning of ASML has nothing to do with playing level field with US equipment makers because ASML makes lithography machines. Banning ASML will not make a favor to US equipment makers in any way.
2. Even if US succeeds in forcing a ban on Holland and Japan, I expect they will reach a compromise and it will be a "professional" one, including do not stop after sales service, still sell spare parts, define a grace period, etc. So US equipment makers are and will remain the last extreme option for Chinese customers. US equipment makers are now doomed in China, no matter what.
The reality is that US administration does not care at all about US toolmakers, US choose to sacrifice their toolmakers to try to crumple China and choose to do it as soon as they can. That's why they started without before reaching an agreement (read "succeed coercing") with others. They think they had no time to wait, they think time is on China side...and they think correctly! China has still a couple of years of suffering, then all this nonsense will end by natural death.
ASML has to resist now as much as they can. What Japan does is less important, gap with Japanese toolmakers will be the first to be closed up, already is for 28nm and above nodes and largely also for 7-14nm nodes. Below 7nm at the moment is not interesting for China.
If ASML succeed in proving itself a reliable and dependable partner in these very critical times, they know they will have an open market in China for the foreseeable future. SMEE will never get 100% China market for many reasons: installed legacy base (1000 ASML machines in China, 1500 mostly Chinese ASML people), competition and healthy market, strategic consideration (to allow ASML doing a lot of money in China is important also for China).
ASML has to resist now and in Holland they know it....