except the digital, you're complaining about is also non-individual, and it's anonymized at a much higher threshold. radio points are demographics based buys, TV is demographics based...niche mags etc., same story.
when you say, begin to search for trips to disney and start looking through photos on Facebook, it isn't that an advertiser discovers you, gnode, are looking for a disney trip, it's that the platform adds you to an audience of people interested in disney and to an audience of people who are interested in travel. advertisers engage with those audiences, platforms hold the data.