I think around 25-35% shop lots along Jalan Bukit Bintang (from Grand Millennium Hotel to Jalan Pudu junction) are occupied by middle eastern businesses. Try walk along the road and you can get the feeling of being on a street in Amman, Beirut or Cairo.

By the way, Qatar Investment Authority (QIA) is the largest shareholder of Pavilion KL (Desmond Lim 2nd largest) and also the owner of Fahrenheit 88.

In Cyberjaya, the equivalent is Neo-Domain area a.k.a. Arab Town. Plenty of middle eastern businesses there.