Tyson Fury and Anthony Joshua are much bigger names internationally than Gervonta Davis and we don't see them making these crazy demands just for the privilege of being able to negotiate. Either Davis has a massively inflated ego or he does not want to fight Devin Haney.
We know the Saudis' money is good because they have been able to make these superfights happen where negotiations had dragged out for years. There is no need to shower Davis with gifts and stroke his ego. He can accept the fight and probably make the most money he's made in his career or he can continue hiding behind Floyd and Al Haymon's protection.
That would be a big treat for the boxing fans if we will ever see a Davis vs Haney fight. It's power versus a defensive fighter, we will see which fighter will win. But the fact that Davis are not agreeing with the fight yet AFAIK, that only tells that he understands how risky the fight with Haney is. He wants to maintain his undefeated record by fighting a boxer that he thinks he has an advantage.
Many are claiming that they are better than Pacman but they are wrong because all they care now is their undefeated record, that's why promoters would not like them if they can't bring a big fight where fans aren't sure which side will win.