I've been responsible for architecting, operationalizing and managing CRM and marketing systems for over a decade. I'm also in the Marketing Operations business and care deeply about data. Yes, I said deeply, and I am not being ironic.
During my career I've been part of more conversations than I can remember where marketers (me included) lament the lack of data at their disposal due to low adoption of CRM by the sales team. They say they're on the road too much. They complain that it's too hard. They just refuse to see the value.
Then come the helpful (please read sarcasm here) suggestions. Reduce their commissions if they don't use it. Get your sales leaders to enforce it. Refuse sales support requests if the deal isn't in CRM. ...