Their governments have manufacturing facilities. Among other thinkgs, they can't get their precious oil out of the ground without technology.
It seems whatever governments they have want to be modern, but terrorists don't. What do they want, opium, heroin, fire and blood? No one can live on that.
Yes, but their goverment officials all are chauffeured in Mercedeses or Lexuses, and their people drive Opals or Ford Fiestas. (And an awful lot of the technology for getting oil out of the ground is bought from Western oil companies and companies with oil-field serve arms like Haliburton :-) .)