Most agencies are stuck on the service treadmill where retainers rarely clear...

https://sticky-wiki.win/index.php/From_Internal_Hack_to_SaaS:_How_to_License_Your_SEO_Tools_to_Other_Agencies

Most agencies are stuck on the service treadmill where retainers rarely clear 30% profit. Try treating your agency like a lab to build internal tools instead. Moving your manual workflows into software products can easily push those margins past 70%.