The Highways were once cluttered with billboards, today there are very few billboards -- there are still highways.

What changed was the highway billboard advertising revenues to the adjacent property owners. Property values did not collapse.

With television you have the "mute" button to manually block annoying advertising -- there is still television.

Internet advertising, mainly sophisticated mainstream ad networks, have invaded user privacy with their data mining operations -- if I look at female hygiene products ONCE the next 5 months I will be seeing tampon banners -- people got tired of that sort of shit. If I look up drug or health information -- maybe trying to find an answer for a friend who has cancer, some ad network banner will track me as a cancer victim and sell that information to other commercial interests that may use it to screen me for mortgage loan credit or some other purpose. The Internet advertising network's promises to their clients and their own privacy invasion practices caused their own problems.

Furthermore, these ads have created a problem due to EU Internet privacy directives for websites that are coming into effect now -- their promises to their clients create new problems for me. Also, my own use of ads to market our websites becomes less effective due to consumers wide use of ad blocking software.

Products that could be free by ad revenue support are in some jeopardy. The Internet will become user service fee based. Tube sites may die. Maybe, it is not such a bad thing