Egypt has had a powerful sectarian military government since the time of the Pharaohs. The Early Dynastic period began 5,000 YEARS ago by our measurements. Occasionally the ancient Priesthood also ruled – but not because they insisted on establishing a religious basis of government, but because they were cruel and power-hungry and had achieved economic dominance.
The secular nature of the Military is derived from its experience in bloody campaigns and engagements abroad and exposure to other cultures, and there is little evidence of a history of religious-based domination dependent on insularity to achieve social proscriptions such as the Muslim Brotherhood seek. What they desire now is the antithesis of several thousand years of Egyptian experience, enforced by desert rabble late-comers that the Pharaohs would have immediately recognized and mercilessly crushed. And maybe that is what will happen again, because a return to hidebound and blinkered desert nomadism is not in the cultural tradition of Egypt whatsoever. AS wikipedia puts it:
Egypt left a lasting legacy. Its art and architecture were widely copied, and its antiquities carried off to far corners of the world. Its monumental ruins have inspired the imaginations of travelers and writers for centuries. A new-found respect for antiquities and excavations in the early modern period led to the scientific investigation of Egyptian civilization and a greater appreciation of its cultural legacy.
The many achievements of the ancient Egyptians include the quarrying, surveying and construction techniques that facilitated the building of monumental pyramids, temples, and obelisks; a system of mathematics, a practical and effective system of medicine, irrigation systems and agricultural production techniques, the first known ships,Egyptian faience (which was used well into the Roman Period to decorate cups, amulets, and figurines) and glass technology, new forms of literature, and the earliest known Peace Treaty with Hittites.
The Muslim Brotherhood really has NOTHING to offer Egypt and a few lessons it could certainly learn about real culture and tradition.