28
Well, big budget projects are not the trend nowadays.
Usually, people dies to work with such a high profile artists and you don't ask for money when Beyoncé calls. The amount of publishing you receive is more than enough. An adding "produced songs for Beyoncé" to your bio is a big deal. After the pandemic, people can work remotely and send files back and forth.
Probably, some of these producers didn't even meet Beyoncé.
She's signed to Columbia Records through Sony. She doesn't own her masters and the revenue comes mainly from three things: publishing, touring and partnerships with brands.