The answer to the title question seems pretty obvious to me. The information technology industry is primarily concerned with aggregating data about consumers – i.e., conducting mass surveillance – and selling that aggregate data to its customers. The customers with the deepest pockets and the greatest hunger for aggregate data about populations are states, and the richest and hungriest of all is the US federal government. No information technology company is going to be eager to alienate the most valuable possible customer.
Furthermore, it’s become obvious that the US federal government has gone to significant lengths to set up this situation, in particular by years of effort to assure that almost all international data traffic is routed through the US.
