Another way of looking at it is CDK's main product is an ERP tailored to the automotive industry. These aren't systems with short setup times and there is major risk to trying to replatform you're accounting system. How do you pull of an ERP migration while you're existing one is down? Further, almost everything the dealer does from inventory management to service is integrated to this system of record either directly or via data integrations.

Some of the smaller mom-and-pop stores just use small business accounting systems like quickbooks but those get pretty tedious to maintain with any sizable number of sales or employees per month.

can confirm. also the high cost entailed to retrain folks from one system to a newer one.

Many are also not tech-savvy. Many dealerships are inherited within a family that has owned them since the 1950s if not longer. They are cash cows for the owners and there's little motivation to try new things. When they are forced to, like when internet sales and marketing became a thing they had to deal with, they just go with the same system that all their fellow dealers are using.

Maybe 30 years ago. That's not the case with big dealer groups or young small independents.

It's still very much a dinosaur industry. I suspect the names (i.e. Tony Jone's Toyota) in dealerships and dealership gorups are typically 70+ years or older by now. Children might be taking over and running things now but dad is still likely "chairman of the board" and makes final expense decisions.