I hope they feel it's a smart decision. Brian K came into CDK promising a lot of R&D around Fortellis but not much has really materialized there. Really, he carved up the company and sold the DMS business along with the Roadster acquisition. So rather than becoming something more of a Tekion, they've stuck to the monopoly "monolith" model. I think the Tekion model is better, but only as long as the partner software is really great.
FWIW, Advent is a major investor in Tekion, and they also purchased the Digital business from CDK, now known as Sincro Digital.