WP Engine's business is built on violating the WordPress and WooCommerce trademarks, 8% is typical for a franchise fee. They confuse customers in the marketplace who think they're official WordPress.
If you watch this stream with Theo: https://www.youtube.com/watch?v=OUJgahHjAKU
He polls his audience and 54% of the thousand people watching thought WP Engine was an official thing, based on visiting their website that day. They have since updated their website a lot, including rewriting customer testimonial quotes without permission: