You may not knows this but before Rotana, Amr Diab had released all of his hits with Mazzika, so the company hold the rights for more of his songs. Sure, Rotana has the songs form the last decade, but the great Amr Diab songs cam out much sooner. Mohsen who is a personal friend or enemy of most Arab singers.
Mohsen is so proud of his past with Amr Diab and Tamer Hosny. He speaks about the rights issues and how he handles complaints or rights violations. His talk seems candid and honest. He employees 300 people who look after his various businesses. He likes to collaborate with and not combat artists. I know in Egypt, they like to remove all kinds of videos and songs that may be violating the artists' or the company's rights.
محسن جابر يوضح حقيقة حذف "مزيكا" لأغنيات عمرو دياب من YouTube