The problem is that the US has capita available that other countries simply don't. If we follow this trend to it's extreme conclusion we end with a world where one country has all the capital and imports every smart, skilled, or otherwise top percentage person in terms of economic value, to the detriment of the entire rest of the world.
Other countries can obviously incentivize people and startups like the US does, and that may slowly close the culture gap, but the US is already way ahead in capital. It's also hard to justify incentivizing an industry which already makes more than most of a country does via capital injection. When half the country is food insecure, the 2-10th percentile of the country getting handed government money doesn't go over well, anywhere.
Other countries can obviously incentivize people and startups like the US does, and that may slowly close the culture gap, but the US is already way ahead in capital. It's also hard to justify incentivizing an industry which already makes more than most of a country does via capital injection. When half the country is food insecure, the 2-10th percentile of the country getting handed government money doesn't go over well, anywhere.