SEO and PPC and very rarely mutually exclusive.
In fact, study after study has shown that when used in conjunction with each other, organic and paid search produce better results than either channel alone.
Obviously, this statistic varies widely based on each company’s vertical, bidding strategies, and objectives.
There is no “typical” when it comes to search performance.
But there are best practices.
And for many years now, the best practice has been to run organic and paid search campaigns simultaneously.
Search is not a “zero-sum game.”