Yeah, indy plumbers will keep a truck for 25 years if they can, and then buy used. But some of these companies have some disposable and could sell off their existing 5 year old F-150s for pretty good cash and "invest" in the EF and save money longer term.
Delivery vans should be here shortly with similar range and cost built on the same platform, great for FedEx.
That could be faster in penetrating the market.