30-second summary: Slightly more retailers with centralized customer data are satisfied with their arrangement, compared to those with decentralized data, according to a new report from customer data platform (CDP) Arm Treasure Data and others. But about three-quarters of the respondents expect to get a centralized CDP or already have one. Additionally, the report said, retailers are actively mining their various sources of customer data in order to tailor a more personalized customer experience. More companies are satisfied with centralized…