This is unusual in Pakistan. Any neutral person will tell you so. In the past, the establishment manipulated and rigged the elections and all parties involved had acquiesced to this dynamic and conformed to the system. They had figued it out how to game the system to stay in power. PML, PPP, MQM, JUI, etc knew how to hold on to power and reap benefits within the established framework. If it was not their turn, they will quietly go sit in the opposition, or make as needed compromises to be part of the government.
Basically nobody posed a serious challenge to the establishment and stayed within their system of control. Now PTI is here. We know they have the massive popular majority because through social media and IK's belligerence, they have showed the people who really controls everything. They have brought the awareness and consiousness to people who want their vote to mean something. In the past the mandate was divided with no clear majority like we had this time. This time IS different. Which is why it is taking the so long to put a fix in.
I think we are looking at the threshold of people losing their patience now.