You don't have mid airs in the good old USA, with wall to wall radar? F-16 and Cessna in South Carolina 2015 taking two lives in the Cessna and loss of F-16 say otherwise. Get off your high horse. Mid airs, like all other accident causes, will always be with us. The very first was in 1910 in Milan, Italy (non fatal) and the first fatal 1912 in France. Though it was a while ago, who can forget this Cessna 172 collision San Diego, 135 people aboard the 727 and seven people on the ground in houses, including two children, two onboard Cessna killed, nine others on the ground were injured and 22 homes were destroyed or damaged by the impact and debris.
High horse? Yeah OK, if that's what you want to think.
Not much has changed in 42 years eh? Have you seen how IFR aircraft are managed in high density areas?
You also don't know what or where my high horse is. I've got a bit of experience in a few jurisdictions.