The US produces “platforms” most people use. Facebook has nearly 3 billion users. The English language is another “platform” that people around the world utilize to make their lives easier when they interact with other people. When someone can outcompete these platforms then they will be able to displace the US, but until then, US soft power will dominate, whether people acknowledge it or not, whether people like it or not.
The US got lucky taking over from the British, with a common language. The Soviets tried to compete by spreading their culture but they had limit success. The French still have a de facto empire so their include persists, and Spain can leverage its influence amongst Spanish speaking countries around the world.
China can best compete by supporting/emanating her partner nations to maximize the use of their own languages and break from these European origin languages and platforms. For example, VK is a Russian social network that is very popular in the Russian speaking world, and enables cross communication across many languages used in Russia and neighboring nations. The concept of a self contained domestic internet with all the apps tailored for the local market is china’s strong point, which Russia wants to replicate. We should observe how Russia transitions to more local or Chinese services as it has been cutoff from western services.
The US also dominates key technologies and key resources. For example, metals are still primarily traded in the London metal exchange. If China displaces these western markets and becomes the number one trading market in key commodities, it will have a higher likelihood of gaining reserve currency status, at least on par with the Euro, and possibly eventually with the Dollar.