💸 𝗧𝗵𝗲 𝗔𝗱 𝗦𝘁𝗮𝗰𝗸 𝗿𝗲𝗮𝗹𝗶𝘁𝘆 𝗰𝗵𝗲𝗰𝗸 & 𝗵𝗶𝘀𝘁𝗼𝗿𝘆 𝗹𝗲𝘀𝘀𝗼𝗻: DSPs, Margins, and Why Publishers must own their data 👇