If the web is so much bigger than the index, then your page is not indexed by the google and it will never rank for any keywords. Google have to choose on what to spider and index. Google does not spider each page what they know about, and doesn't include every spidered page into the index. Google's constraining resources are bandwidth and electricity. After some levels they have to assign those resources among all the different Web sites. Google does not going to index web sites A to G and next ignore H to Z. Google has large but it can spider limited number of URLs, therefore a large sites in the site owner interests to assist the indexing program run more capably, because that may well lead to more pages being indexed.