1) Royal families ruled in Nepal , Bhutan while Egypt , Libya were under  military rule which suppressed the people of their rights and discriminated them on grounds of religion , caste , gender , etc.

2) On the wake of democracy , people felt that they were humiliated by their rulers and rose in protest against them. This made the ruler's to awaken and they tried to implement democratic ideas.

3) Protest and hesitance of people to adopt to democratic norms might be the delay of the above countries in adopting democracy.