By 2020, targeted ads based on demography will be replaced with personalized ads for each consumer on each device.
http://www.afaqs.com/news/story/51382_What-can-we-expect-from-Advertising--Marketing-in-2020/
It always amazes me to see how much the marketing world has changed in the 20 years I've been in it. Everything was so different then; we spent millions of dollars in advertising through channels that could never provide us with a proper report, let alone a reliable return on investment.
https://www.forbes.com/sites/forbesagencycouncil/2017/09/15/how-to-choose-the-right-marketing-automation-tool-for-your-agency/#324b92594744/