Most SEO agencies are stuck in a service trap that keeps margins around 30...

https://papa-wiki.win/index.php/Why_European_SEO_Agencies_Are_Building_Tools_Faster_Than_US_Agencies

Most SEO agencies are stuck in a service trap that keeps margins around 30 percent. If you turn your internal workflows into a simple tool, you can hit software margins of 70 percent or more. Stop selling your hours and start building an asset.