Online ad agencies struggle with this issue everyday. How do you generate the same profit from organic search engine optimization when it requires a lot more effort, expertise, and expense to produce high rankings and organic traffic? How do you sell the possible disruption on a web site to clients, in order to make it rank well? It's a lot easier to throw up a brochure site with a few catch phrases and graphics and bid on some AdWords advertising.
Part of the problem can be solved by valuating search engine optimization services more highly. SEO is grossly underpriced. In my situation, clients are paying 4 times as much for PPC clickthroughs as for organic clickthroughs. Studies show that people click on organic listings in the results pages, even though the space given to text ads is almost pushing them off the screen. Text ads still aren't precisely targeted either. Why should they be? If they're poorly targeted, it creates more clicks and more revenue for the search engines.
Organic rankings don't suffer that problem. If the person isn't interested, you're not out much.
Another solution is to create new web sites to cover specific facets of a product or service. This ensures funds will be invested in SEO, thus creating an opportunity for SEO to generate sales leads and revenue. Many companies stick to one web site when they should have 4 or 5. A single site is under tremendous pressure to perform. Putting all your eggs in one basket is not good risk management strategy since competitors will find it easier to beat your one site, and Google could alter its algorithm overnight resulting in a loss of half of your traffic. Not a likely scenario, but it does happen.
Source : http://www.seoconsultants.com