Lol, seriously dude you need to update yourself about 18 ammendment, which virtually took all the sovereign power from city govts and put them directly under Sindh govt. Is ka hi tu sara phuddha hai.
During musharaf era, City govt ky pass direct paisa ata tha from federal govt but this got fundamentally changed under 18 ammendment in 2012. PPP forwarded this law which has proved as a game changer for them for controlling financing of the city despite of having just 1 or 2 seats in Karachi. This is also precisely why, PTI doesn't like18 ammendment rule and at times threaten to dissolve ppp sindh govt and put Sindh directly under governor rule. If they do that, than all the authority comes to pti though courts will not let it happened.
To cut long shit short, federal govt of PTI cannot do much about it in Karachi because of 18 ammendment rule. Each and every administrative power of the city directly controlled by the Sindh govt. Even city govt has limited sovereign administrative powers which also has to be sanctioned by provincial govt first especially when finance is required.
So people, educate yourself regarding the law and administrative control of the city first than blame current govt for the mess.