I do not think that a majority of the workers here need be worried about their jobs. I see a trend that started a long time ago. Qatari companies hire talented individuals to help establish a need within Qatar then more workers are hired to maintain, and usually with a lack of technical skills.
Are Qatari's the minority, yes they are and for a good reason. How many do you see working at Burger King or pumping gas. Most of the jobs in this country are done by lower wage employees who don't mind the work and are thankful that they are getting a wage larger than what they could make in their home countries. Until Qatari's decide to take on these jobs they will always be the minority. Also there are only so many management positions available for them to fill.
Take the roads for instance, when I arrived 3 years ago the roads were all roundabouts, more than likely built by the British. Take Q TEL, do you really think that Qatari's designed and implemented the networks or did an outside source get it up and running then they hired under qualified individuals to run int. Have you ever called their service department because your DSL modem isn't working? What kind of service did you receive. Most of the people working for the companies know enough to answer rudimentary questions but technical knowledge they do not have. Granted I am sure there are many technically qualified individuals working for them perhaps I just always get the guy who isn't one of them.
Could Qatari's take over these jobs, absolutely, but in my opinion those jobs will seem to be beneath them. Why would they feel the need to provide customer service when they can just hire someone to do it for them.
As for religion in this country I do not think they will ever have a lack of expression or need donations for anything. I also believe there will never be a time when the government policies change to the point where a Qatari feels like their rights are in jeopardy. The Qatari citizen will always be thought of first above all else when it comes to rights or policies. Which it should be it is after all their country.