๐ธ ๐ง๐ต๐ฒ ๐๐ฑ ๐ฆ๐๐ฎ๐ฐ๐ธ ๐ฟ๐ฒ๐ฎ๐น๐ถ๐๐ ๐ฐ๐ต๐ฒ๐ฐ๐ธ & ๐ต๐ถ๐๐๐ผ๐ฟ๐ ๐น๐ฒ๐๐๐ผ๐ป: DSPs, Margins, and Why Publishers must own their data ๐