Customers want dashboards and Palantir provides excellent dashboard tooling. Dashboards make people feel smart and feel like they are learning something. But dashboards are not as useful as people think and usually fail to return enough value to cover the cost. As Palantir is so expensive the bar is higher and often not met - hence the losing of customers.
Customers need data models but they don't know it yet. The charts used with models are usually not interesting if they exist at all. If you did show charts of the data models to the customer it often makes them feel dumb and out of control - few people like that. They're also dependent on you to interpret the models and customers don't like that either.
So given the choice of comforting lie or uncomfortable truth the vast majority will choose the lie. So if you're in the business of selling comforting lies don't be surprised when they fail to work.
My bet is Palantir knows more about their customer's needs than you do.