Even adsense is best, other networks can pay good. But for any serious earning you must be high ranked on google and other search engines, be active on social media. To get so big number of views, articles must be high quality. Some bloggers buy articles from others but they will not admit it.Yes, I agree with @fcbetting, one should be committed if one is a blogger. I have heard from lots of people that they earn well from AdSense but getting approval is very difficult. They ban you once you are caught for breaking the rules.