How the gulf countrys banks can survive without chargeing interest?

Answer 1

The business model of Islamic finance is based on partnership and not on "riba", usurious interest taking, which is forbidden in the Koran. However even though they don't charge interest, Islamic banks are generally not charity organisations.

The customer and the Islamic bank share the risk of any investment on agreed terms, and divide any profits between them.

Answer 2

their bussiness basses on lost and profit, which is agreed upon, and they make buissiness to survive, and investment groups works under those banks. and link below can show you how they ar getting that profit, and exist in buisiness.