Same way restaurant employees in Germany have a salary, but 80% of US restaurants would close immediately, if their "associates" would not have to survive on tips...
You can cope paying 50$ month per month in diesel if you drive that much.
But at the scale of logistics companies, often tied to fixed pricing it's a tragedy.
I’m aware that the diesel price in the us always has been quite low in contrast to Europe, but still I don’t see the issue.