ALL delivery drivers? If you eliminated tractor trailer drivers for just 1-2 weeks, most people would be dead. No food, no nothing. Unless you're one of the very few that could sustain themselves with a farm. But even farms need to be delivered supplies...
I did not mean to include the truckload shipments going from warehouse to store. We do handle much of that at all.
Without delivery companies, companies may have to hire more employees to go to the local Staples and pick up office supplies, or drive 4 hours to pick up that part that they need.
People would have to drive to Walmart, CVS or Home Depot and pick up their own household goods instead of relying on Amazon.
The world could get by without UPS, granted, at a higher cost, but would be in chaos without police officers, fire fighters and nurses.