There are entire categories of things where it is just the US doing the thing, OR without the US the thing would implode.
For example, there are only two popular mobile phone operating systems: Android and iOS. Both are made by US companies (Google and Apple).
Let me put it this way: If every undersea fibre link out of the Americas was suddenly severed, people in the USA might not even notice for a while. The rest of the planet would make a winding down noise as every second piece of hardware or software stopped dead because of some missing dependency.