The Malta gambling industry is one of the most (or even the most successful) in the world. A large number of online casinos in Malta are the number one choice for people around the world. People pick them for a variety of reasons, and some of them are - safety, diversity of good casino games, excellent bonuses, etc.
Companies in Malta pay 35% tax, but most of this is refunded to its shareholders if they are non-Maltese, effectively bringing the tax level down to a meagre 5%. There's also financing available for digital gaming start-ups in new markets that demonstrate potential for job creation and growth.