Most agencies hit a wall at 30% margins because labor costs eat all your...

https://blogfreely.net/murciajpvo/do-you-need-venture-capital-to-build-an-seo-tool-if-you-already-have-retainers

Most agencies hit a wall at 30% margins because labor costs eat all your profit. Start treating your agency like a lab to build internal tools instead. Once you turn those into software, you can easily push your margins past 70%.