You forgot the end of that sentence too, Tallg:

He said the current sponsorship law system meant employers tended to recruit foreigners with sub-standard skills *on lower salaries*.

So on the one hand he's saying that the nationals lack skills ("not enough incentives for Qataris to learn new skills ") and then he says that foreigners are cheaper anyway.

So is it the sponsorship system that is stopping nationals from engaging in certain work activities, or their often outrageous salary demands?