People try all the time. The usual problems are 1) CDK doesn't just do the DMS, they have a whole bunch of connected software that interoperates with it, and s

People try all the time. The usual problems are 1) CDK doesn't just do the DMS, they have a whole bunch of connected software that interoperates with it, and so you can't just spin up a DMS to compete. And 2) A bunch of the value CDK brings to the table is supporting the business with things like compliance (laws relating to car dealers change constantly, there are teams at CDK which keep up with all of this regulatory stuff as their full time job). That's my perspective, as someone who has worked at CDK. If you want something corroborating that, go look at r/serviceadvisors and see why people say they can't switch to anyone from CDK. The tiny dealers are the best candidates for moving, everyone that's reasonably big has too many needs the other DMS providers do not address (yet).