You can say this is a result of corruption, which i agree, but it also seems to work to the US’s favor when it comes to global competitiveness of the big companies.

Large and powerful companies with unchecked power is bad for equality and fairness within the country, but those same companies are also given an “unfair” advantage when they compete with other countries’ companies.

I suspect this contributes to US being able to maintain their global influence, and is partly why Big Tech are all in America. If they were founded anywhere else, they probably would not have the chance or ambition to expand since they would have been regulated long before they grow to current sizes.

I definitely agree that this leads to the overwhelming corporate influence you mentioned, which is bad. Just pointing out another perspective from the national power front.