I am surprised it's not more than half.
One thing to keep in mind is this is shipment share, not quiet the same thing as unit share or revenue share. It's a huge achievement either way, but it's something to keep in mind.
It seems they've built a successful beachhead, I wouldn't be surprised if (some) other countries start adopting Chinese enterprise GPUs if the cost to performance ratio makes sense (and the sheer size of the Chinese market and full commitment of the CCP means this issue is not unresolvable).
A bit of tangent, for some reason, whenever the topic of the rise of Chinese technology platforms/systems is discussed I keep remembering watching "Free to Choose", which from some quick web searching I found out was the 1990 rebroadcast, on a pirated VHS as kid in the 90s (even though this was in Eastern Europe, english language pirate VHSs were already available).
I didn't have the knowledge, life experience or minimal maturity to evaluate (or even understand) the series. I really watched it because of the cool imagery of Hong Kong; my father occasionally traveled there for work and it felt like such a different and interesting place. That being said I do think I subconsciously was a bit cautious about the message. While I didn't understand the context, it just felt a bit off. I think people in Eastern Europe are in general skeptical of "Deus ex machina" type arguments due to disastrous legacy of communism and it's direct association with russian genocidal imperialism. I even want to say that when I watched the series as a kid, I thought it was strange that they kept repeating the terms freedom so much, but I might have made that up after the fact.
Back to enterprise GPUs, the freedom to choose [your enterprise GPU provider], only comes around if you are a gigantic economy with the ability to engage in extremely expensive industrial policy while also having a "captive market" large enough that it can nurture and kickstart and native industry.
Not to mention the personal freedoms lost by Hong Kong (with significant backing of HK oligarchs and senior businessmen).