Since google generates revenue from ads aren't they losing money from then not being displayed?<p>Examples:
Adblock plus: adblockplus.org
Adblock: getadblock.com
Adblock for youtube:
https://chrome.google.com/webstore/detail/adblock-for-youtube/cmedhionkhpnakcndndgjdbohmhepckk/details?hl=en-US