WP Engine asserts they demanded "a significant percentage of its gross revenues", not profits. I'm not sure we know what their margin is.

Matt Mullenweg confirmed:

> They had the option to license the WordPress trademark for 8% of their revenue, which could be delivered either as payments, people (Five for the Future .org commitments), or any combination of the above.

— https://www.reddit.com/r/Wordpress/comments/1fnz0h6/cease_de...