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

https://www.social-bookmarkings.win/seo-retainers-trap-you-at-30-margins-because-they-re-tied-to-headcount-when

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.