adwords and adsense are patented by Google. DoubleClick was a more impactful acquisition than YouTube, hence $3.1B vs $1.5B https://www.nytimes.com/2007/04/14/

adwords and adsense are patented by Google. DoubleClick was a more impactful acquisition than YouTube, hence $3.1B vs $1.5B https://www.nytimes.com/2007/04/14/technology/14DoubleClick.html https://www.nytimes.com/2007/04/14/technology/14DoubleClick....