>> educate the consumers
Every dealership I've been to has been more interested in feeding me whatever line of crap they think will get me to buy a car, not actually educating me about the different products available.
>> financing, DMV paperwork
Tesla and Carvana have proven these can be taken care of without a third party dealership. In most cases, financing is provided by a bank or credit union, not the dealership itself
>> and most importantly service your vehicles
Unless the fix is covered by warranty, I'm not taking my car anywhere near a dealership. They charge considerably more money than my trusted mechanic. My Hyundai dealership wanted $125 just for an oil change on a 2013 Sonata.
In theory, a dealership could be good for all of these things. In practice though, they suck. There is a reason most people hate car dealerships.