Think many are drawn to RAK in desperation and in the belief that "old-man" Daune can somehow offer them last-ditch chance to do some flying while at the same time drawing on his experience and engineers to keep them flying in what they may perceive to be a less stringent and less regulated environment.
Other important of course is that RAK is relatively cheap, much cheaper than rest of UAE.
Secondary operators are also under impression that all the world's cargo is available in UAE - till they get there and then discover that only non-viable routes freely available to places such as Eldorette in Kenya, Ndjamena in Chad, Bangui in CAR, Lagos - Nigeria, and to North West Africa, all destinations offered at rediculous rates with no chance of return cargo.