Most agencies stay stuck at 30 percent margins trapped by the service model....

https://dibz.me/blog/why-a-handful-of-european-seo-agencies-stopped-being-agencies-and-1138

Most agencies stay stuck at 30 percent margins trapped by the service model. Treat your agency like a lab by turning internal scripts into software to hit 70 percent margins. Stop selling hours and start building tools that actually scale your profit.