SEO retainers usually cap your profit margins at 30 percent no matter how well...

https://romeo-wiki.win/index.php/Why_Third-Party_Tool_Constraints_Are_Killing_Your_Agency_Margin

SEO retainers usually cap your profit margins at 30 percent no matter how well you scale. Try treating your agency like a lab to productize your internal workflows. Shifting to software is the easiest way to push those margins past 70 percent.