So half of the traffic is Chrome requests, but how much capacity is all of the traffic actually using? Are the root servers 90% idle or are they overloaded? Th

So half of the traffic is Chrome requests, but how much capacity is all of the traffic actually using? Are the root servers 90% idle or are they overloaded? That changes everything. Also servers are fast, bandwidth is cheap, and DNS is lightweight. How is this really a major resource issue?