Most SEO agencies are trapped in a 30% margin ceiling because of retainer...

https://astro-wiki.win/index.php/The_Agency_Paradox:_Why_You_Should_Stop_Renting_Your_Future

Most SEO agencies are trapped in a 30% margin ceiling because of retainer burnout. When you start treating your agency like a lab and building internal tools, you can pivot to software margins that easily hit 70 percent or more.