Service-based SEO keeps margins capped at 30% because you’re trading time for...

https://bizzmarkblog.com/what-mistakes-do-agencies-make-when-they-try-to-ship-software/

Service-based SEO keeps margins capped at 30% because you’re trading time for money. Treat your agency like a lab to productize your internal workflows into software. You’ll stop the hourly grind and push your margins well past the 70% mark.