It wasn't always like this.
But there's a rush going on now. Producers today jump for opportunities because they know the industry is flooded. Everyone is worried about "looks". So the majority of them are getting taken advantage of because they're not handling their business properly. Rappers never wanted to come out of their pockets for music, but you used to be able to make sure the paperwork was right before you hit them with anything. Nowadays, if you pass, someone else will just email something over in two seconds. So a lot of these guys who are pressed for work, will risk it and then end up not getting what they deserve.
Sign of the times. But another thing dudes need to realize is, there aren't many friends in this. The relationships aren't as solid as they were back in the day. 90% of these dudes are working out of debt, so they can't really pay what's being asked out there anyway. And if they can figure out how to get some music for the low or even free, they're gonna do that. With there being so many options out there for rappers who need production, it's hard for a producer to be selective and eat well, but it's the smartest way to go about things today. Times have changed.