There's much to be said for sticking with things we know work, rather than experimenting with new things that might work better. If a doctor has an effective treatment for a common condition among their patients, what is the cost of trying something new? Do you try it with all patients, or just one?

But "laziness" is something of a trigger word for me in health care discussions, just like "greed" is. It's so easy to attribute what we see as suboptimal outcomes to malice on the part of the person acting - even passive malice like laziness.