Basically, it's the mentality, as I mentioned before. Urdu Speakers included.I want to add here that migrants didn't get everything in a platter like the Pashtoons/Punjabi's/Sindhi/and Baloch, they came in Nange bhooke literally, yes some brought money but many came in torn apart, I think the first crack that literally hurt things in Pakistan was when Ayub Khan (although) I support some of his policies but as a Pashtoon he insulted Fatima Jinnah, the women who struggle with Quaid in the creation of Pakistan he presents her a Traitor, if we were a zinda nation Ayub would've been in jail at least. As for taking the lands and giving it back to Govt, I don't think it would've worked because Baloch and Pashtoons are Tribal people with Tribalistic way of lives, they are extremely self centered people and would not want any outsider to interfere in their businesses.
The thing is that When a Pakistani Punjabi relate to a Punjabi from India, Pakistani's don't lose their minds, If a Pashtoon relate to Afghani no one has a issue, if a Sindhi Hindu relates to Gujrati Hindu no issue, but if a Urdu speaker relates to Indian then all hell break lose. I think that to be honest our Army is afraid, that the Pashtoons and Baloch will revolt or mutiny hence despite the highly questionable activities from the both ethnicities they were not isolated as brutally as the Urdu speaking community. This game which Pakistani establishment is playing will not end well for Pakistan, I did not thought that a day would come when I would say that I wish that I've immigrated to US much earlier in life so I could bring my whole family out of there cause how things are, the time is not far when once again people will stop civilians in buses and check their CNIC cards only to execute people who does not belong to their ethnicity/Sect .
And I don't find any power to change it. So I ran away.
That was Zia ul Haq.Makes you wonder what the agendas of people were who brought MQM to power