Most retainers cap your margins at 30% because human labor is hard to scale....

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

Most retainers cap your margins at 30% because human labor is hard to scale. Start turning your best internal workflows into software products instead. When you build a lab instead of just an agency, your margins can easily jump past 70%.