It seems Al Hilal is still spending money and they don't want to stop hiring players for huge amounts of money, this time Al Hila hired an Arab player from Al Ahli, and they hired Mohammed Al-Rubaie and now there are many goalkeepers in Al Hilal after hiring this player and Yassine Bounou from Sevilla.
There is no stopping them at all. And even when they start being rated a top class league, they won't stop. I know that there are consequences for these especially on the acquired players. Some of which will end up not having enough play time. They'll lose their form. And may opt to believe despite the huge salary to receive. At this point no team would wants them.