It's possible nowadays to live an almost completely ad-free life. Outside of live sporting events and billboards, we have so many ad-free choices, that choosing something with advertising at this point has to be deliberate or simply out of laziness. The world of web advertising is gone just like many worlds that are now outdated: CDs, DVDs, etc. It's just a matter of time till the companies involved realize this. They're like the coyote who, chasing the roadrunner, has run off the cliff but hasn't looked down at the abyss yet and thus hasn't yet fallen. Google and Facebook will at some point realize they're in defiance of gravity and start plunging. Perhaps they can rescue themselves with native mobile apps or other closed ecosystem allowances, but on the open web, they are finished. I'm just amazed it took this long for the final act to start ...