No one will ever spend money on something which will not fetch profits. But people are ready to invest if there is an opportunity to drive a huge conversion rate of potential customers. Google AdWords can help you achieve the desired conversion rate with no efforts.
Say for example you searched books on Google goes through millions of WebPages, blogs and articles to find the most relevant words to books and then shows the results. But wait, there are many businesses which also provide books but not all businesses may be listed among the top results. AdWords gives your business visibility even your website is not listed in the top search results.