The stats tell the truth: the top ad spot gets about 2% of clicks (CTR) on average, whereas the top organic spot gets about 20 times that, 40%. Why? Because people trust it more. They trust the Google brand to deliver the most relevant results to their search query. Anyone paying for an ad might be perceived as just trying to hijack that process for a quick buck. It generally takes 3 months to earn the top organic spot with Google (there are exceptions to this), whereas it takes around 3 minutes to place an ad to get the top spot. Society values those who have earned their way to the top in any field, rather than bought their way.
So for the last 19 years or 20 years that Google has been around, every month Google has had, at least seasonally adjusted, not just more searches, but they've sent more organic traffic than they did that month last year. So this has been on a steady incline. There's always been more opportunity in Google search until recently, and that is because of a bunch of moves, not that Google is losing market share, not that they're receiving fewer searches, but that they are doing things that makes SEO a lot harder.
This means that each organic search visit is worth $7.35. Chances are, you’ll spend WAY less than that to generate that one visit. How’s that for some rock-solid ROI? You can get even more specific with this by looking at the organic search traffic for a particular keyword. By extension, you can calculate the ROI of that keyword. You can begin to see how this can ramp up your SEO game.
Remember when you used to rely solely on search engines for traffic? Remember when you worked on SEO and lived and died by your placement in Google? Were you #1? Assured success. Well, okay, maybe not assured. Success only came if the keywords were relevant to your site users, but it was the only real roadmap to generating site traffic and revenue.