From the graphic the insurers take in $371.6b and pay out $241.9b in medical services costs.
That’s $130b on a pointless activity that uses up physical resources that would be better deployed elsewhere in the economy.
Healthcare needs to be provided as a matter of course, and “competition” won’t improve it or control it because there is always a supply side shortage of provision.
That’s a difficult problem to solve, but solving it by forcing a huge bill on expectant mothers and cancer victims, etc in a futile attempt to control demand is not the way.
Which is why the rest of the world charts a different path.