The tool truck will resemble a UPS or FedEx truck even more than it does now.
They sure deliver a good selection of tools, new or used..

absolutely!!!
I basically order all of my tools and shop equipment online.
I do agree that MATCO is probably facing a questionable future with finding someone to make their tools. Time will tell.
Cornwell does have a factory but, they only produce their core hardline. Many of their tools from pliers, roto ratchets, hex or torx bits, screwdrivers, etc. are outsourced and imported.
I think MAC is having a bit of a resurgence. Their impact wrenches, cordless tools, Duratek screwdrivers, 90 tooth ratchets, and PROTO linkage items are top notch.
Snap on continues to excel and probably always will. However, mechanics wages are mostly flat and with the tool quality gap narrowing quite a bit, I see techs spending less on the truck and more online.
I think SK will try to reclaim their place among independent mobile distributors but, it will take time to Establish credibility and quality once again.
Tool trucks will always be around to meet a tech's needs but, the dealers will face increased competition in the future.