At Ahram Online, Ibrahim El Houdaiby analyzes the poor political choices on the Brotherhood's part that led to the alienation of revolutionary forces, the opportunity for a return of the ancien regime and the MB's downfall. Whether you believe the MB could have charted a different course or you think its very structure and belief system made its mistakes inevitable, this kind of analysis -- rather than the unsubstantiated accusations of terrorism, the class prejudice, the wholesale demonization one hears so often -- helps explain June 30th. (The English translation is not always smooth; the original Arabic article is here). 

The Muslim Brotherhood appointed the first Cabinet with many ministers who were Mubarak’s men because the president did not want to make concessions to his political opponents so they could participate in purging and reforming state agencies. He chose to share power with those already in power, including the military and remnants of the former regime, and also because of the limited abilities of the Cabinet members he brought in.

All of this made him gradually lose the support of revolutionary forces. No popular support could have stood up to the interest networks in state agencies that sought to thwart him (even before his election, I and more knowledgeable writers than myself often wrote that the president would face challenges in electricity, services, national security and social peace that would be instigated by those who wanted to restore former conditions. The only way to overcome these challenges was to build a popular alliance based on genuine concessions by Morsi that realise the gravity of these challenges. The only way was to rely on general grassroots support, not the Muslim Brotherhood group’s base).