It’s not a matter of profit. It’s a matter of costs. 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 shortag…
No, it's much worse than that. How much time and money is spent by medical providers dealing with the billing?
Arguably at least twice as much -- the insurers have economy of scale that providers can't match.
And that's before you even get to the direct time and stress impacts on the consumer from bullshit denials.