There are currently very powerful men interpreting Muslim law and creating and passing down cultural edicts. This is why Muslim countries are patriarchal. It is a matter of women having few rights to begin with, so whatever rights they have left can easily be taken away. No one is going to intervene, because they will likely to killed.
I agree with #3. The more traditional societies of the world are the least progressive, most unchanging and are often Muslim. Their eschewing of most things modern is a good indication of this, evidenced by many of their lifestyle choices. Their religious teachings, too, are rooted in the patriarchal tradition and are the basis of Muslim life today.
This question would be best placed in the discussion section where you will get many and varied answers to your question. However, my belief is that the founders of Islam were operating in Old Testament times where women were considered inferior to men. Some of the belief system about women in ancient times is almost word for word what women under strict Muslim rule experience:
Women's behavior was extremely limited in ancient times, much as the women of Afghanistan during the recent Taliban oppression. They were:
Unmarried women were not allowed to leave the home of their father.
Married women were not allowed to leave the home of their husband.
They were normally restricted to roles of little or no authority.
They could not testify in court.
They could not appear in public venues.
They were not allowed to talk to strangers.
They had to be doubly veiled when they left their homes
I do not know what kind of laws different Muslim countries have. What I do know that many Muslim countries insist upon framing their laws in line with the their religious books like Koran. As the these religious books are old and no changes have been made in them, I am sure an approach like this will come in way of thees countries in modifying their laws in any way. This means if the their traditional religious beliefs and practices were heavily tilted in favour of patriarchal system, then their laws will also continue to have such emphasis.