Even if you did multiple keywords search for your niche, it doesn’t mean you’ll become successful online.  In fact, getting on top of the search engine itself is not a guaranty that a website will earn that much.  It will earn, of course, but you could totally depend on the position subsidize you the expenses of the site alone.

The website still needs lots of link building and seo works to be done before it reaches its potential in internet market.  This one of the reasons why there variety of seo tool being offered online, promising total advancement of the site to gain it full potential and later produce enough profit.

You may say it depends on the competition on that particular keyword.  it may also be right or wrong because there is that targeted traffic which will give sufficient traffic.  In fact, even if your site does not appear on the top search engine result pages, you can still generate such income.

Though keyword searching is one of the things to be considered, you still need to work for the promotions of the site to reach the target audience.