Agencies usually hit a ceiling at 30% margins because of all the manual labor....

https://technivorz.com/four-dots-how-a-novi-sad-agency-cracked-the-code-on-product-evolution/

Agencies usually hit a ceiling at 30% margins because of all the manual labor. By treating your agency as a lab, you can turn those workflows into simple software and push margins past 70%. It is time to stop selling hours and start building assets.