Most important thing for Qatar and other Gulf countries to consider willbe whether they can continue to have economic growth in the absence of sponsorship system. Most large companies depend upon cheap labour which are forced to stay because of this system. In absence of sponsorship system they will be free to find other jobs. They will likely get better paid jobs, but profit margins will decrease. Secodnly, they may end up having a work force that cannnot find employment all the year round, many smaller companies want to hire labourer for few months (that time they have a contract).

Similarly the housemaids probably will find better oppurtunities in an open job market, raising their salaries (good for them).