US can ban Android or IOS and people can use Harmony or come up with something else.In geopolitics, the US doesn't always get what it wants, but we're not talking about the US's control over every aspect of geopolitics. We're talking very specifically about its control over software platforms and financial services. There, the US does have tremendous leverage, because Silicon Valley really did take over the world outside of China.
In 2024, Android + IOS had 96% of global market share in smart phone OS. Harmony OS had just 4%, virtually all of it within China.
When you are that market dominant, it gives you power. No two ways about it. Same reason why China's dominance in EV and battery technology is scaring the **** out of the US and leading to constant media attention and political action. The only difference? Nobody outside of China and Russia are raising the alarm about the US's 96% market share in smart phone OS, despite the obvious risk that poses to national security, because they've been so used to the US media telling them what to think.
If China bans Apple from global supply chain Apple dies along wit IOS.
if China bans US from Asian semiconductor Google and Apple both dies along with IOS and Android.
That's the difference between being popular, and being dominant.