Magician's Apprentice's Mop.
This should be fun, and probably inevitable. As a general rule, when toppling a ruler, make sure you have a replacement ready, or something worse will take the throne while you're celebrating.
I'm putting a fiver on Youtube videos being watermark spliced with adverts at the cellular level. Also, websites that need ad revenue to live will have Captchas that involve enforced interaction with an advert in order to view the site.
I'm looking for a anonymisable microtransaction system where websites I like I can 'bitmark' and when I visit them they get a smidgen of a penny from a hopper I load.