[trashtester]

Imagine if there were 200 companies producing airliners instead of a handful? How would the airports know which were safe enough to land?

Imagine if there were 200 operating systems for phones, instead of 2? How would corporations know which were safe enough to install 2-factor auth on?

Imagine if there were 200 suppliers of x86 cpu's, all with small differences in features? How would we build safe software for those?

Consolidation to a few vendors (but more than 1) is a huge benefit for both costs and safety.

And there is absolutely no reason these companies need to be "Western", unless you include Korea, Japan, Taiwan and India in the "Western World".

China would probably have one such company, but would perhaps only be trusted by their allies, just like US companies would probably not be allowed such infra in China or Russia.