Not only does this Microsoft Advertising discuss their support for the importance of “multiscreen pathways” but they also talk about how user experience is the new crown prince: New Microsoft Advertising Study: Consumer Experience is the New ‘Crown Prince’ – Microsoft Advertising Blog – Microsoft Advertising Community.
On a related note, here’s the IAB talking about how Mozilla’s decision to block third party cookies isn’t necessarily about protecting user experience. Why the IAB Fights for Cookies