Indians and Chinese went back because of opportunities, not solely for the love of country, billion plus is big market for anything... Those countries are somewhat stable, people started flocking back as economics and political stability curve was in right direction...
Overseas Pakistanis are no different, they would love to comeback when the tide will start shifting, Pakistan has gone from bad to worse in last 30 years, our army lives in their own world, they run the show, they don't realize its not 1980 anymore, their policies have failed and made country less stable, keep investing in those policies will further deteriorate the country, their vision has resulted in more extremism, less tolerant, and no economic progress... politicians and bureaucrats have field day in this env, they can milk lot of money...Problem is that environment is attracting wrong kind of crowd, not long ago, Pakistan was silicon valley of terrorist, everybody and anybody can do whatever they wanted too...People forget, it takes few hours to destroy a building or house, but takes years to make it, creating vibrant and open culture is far more difficult than creating
BTW: Once I heard Imran Khan saying 1.2-1.5M US Pakistanis make more money than 200M living in Pakistan. He also claimed that, he get more charity money from here in US than anywhere else, I am not surprised if that is the case...So its not like overseas Pakistanis hate Pakistan, we hate policies of Pakistan, the environment that is there right now...And its not just us, people living there wants to go out in large number...Once I heard, Shahid Khan(a US Pakistani billionaire, who was featured on CBS 60 minutes), the size of beards have to come down, society has to be more open for people to come back or build business relationship back home...
I can give you some number of my fellow Engineers, out of my EE batch of 120, I know for sure 40+ live in USA, another 20 in Europe and 30 in middle east...There are only 20/30 odd live in Pakistan and half of them are CSP officers(nothing to do with engineering) or have their own family business, other half went back (some because of family problems, others who have family business to take care), 5/7 are working in our University as professors, you can see how brain is drained out of our country...
Again there is nothing wrong with Pakistani genes, its the environment and culture that needs to change...Unless you allow liberals to thrive, people are not going to comeback and more will be drained in that suffocating environment...People don't trust that env to have fair chance and opportunity... And believe me, if US becomes a place where fair chance goes down the drain, people will flock from here too...
You don't realize, we cannot hold a Cricket match in Pakistan...No major airline has direct flight to Pakistan, that was not the case 15 years ago, we have gone in wrong direction for long time...With Raheel Sharif being made head of some Islamic Army, is another bad news, so Army is doubling down on Islam, that is terrible investment, it has served us no good in last 30/40 years...Keep drinking the cool aid of religion, lets see how far it takes you