What about coaches? They are knowledgeable. They have a major influence in the batting order and team selection. AT the end of the day, every body wants their team sheet filled with known names.
In IPL, they play a lot of games and have a chance to come back if some one fails. Can't compare that with PSL.
For all we know, maybe there is no youngster worth a chance at the top. Maybe the coaches know what they are doing and it's the fans that are hoping for another Fakhar when there is none
IPL has 14 games, PSL 10; IPL has 8 teams, PSL 6 - if you look at from other end, it’s 4 more games, but odds are 4 out of 8 vs 4 out of 6; therefore it can’t be that IPL takes chance. Besides, I would have taken that had youngsters were promoted in dead runners (when team’s fate is decided) - but few y ars back, Wridhman Saha (the WK), was no body as he didn’t made the Indian squad even as reserve but he was in brilliant form - they (I believe KKR or Kings XI), put him as opener or No. 3 in IPL eliminator & then in Final.
Coming to the coaching staffs - there are 3 foreign, who are almost mercenaries; just there for 6 weeks’ money. I don’t think Arthur or Moody or Jones has any scope in this regard - they are given a set of players and a clause that one emerging has to be on XI. Other local 3 are not the most fair people in PAK cricket, rather opposite - one has got his son a nice $25000 pay day for buyinmore double cheese jumbo burger.
3rd & most critical part of your post is weather youngsters are performing or not. There are 2 issues here - 1. What is actually performance & 2. What opportunity are they given.
For first one, I don’t think the 2 fifties MoHa scored against MU is any performance but just numbers. First 59 was a disaster - a late Sammy blast saved it from total embarrassment. The 2nd one is even worse, while chasing. Compared to that today Hasan’s performance to me is better. TANVIR won MoM defending 180 or so few days back - to me bowling first same day (or at similar time), Sameen Gul performed better. Just few examples.
For 2nd one - obviously a kid of 23 won’t match the numbers of a veteran of 38, but when ever possible, you have to give them chance to showcase talent - few days back Malik sent Maqsood at 3 when 35 or do we’re required in 10+ overs - why not Badar? just another example.
Bottom line is, the culture is not to promote youngsters at any level. If you hear any PAK youngster, 9 out of 10 words you’ll hear this Bhai have lots of confidence, that Bhai supported lot..... you ask same question to any Indian young player - most likely you’ll hear what technical advise Dravid gave or how VVS changed his grip or Kumble showed him the wrist position. Simple reason is, for a PAK kid, his expectations in a team is limited to carrying drinks or kit bag. On top of that if any senior gives a nod that kid is good, can be tried - he is doing a meherbani (which is support & confidence).
Genetics hasn’t changed, neither system - still if you search history, only under 3 captains, there had been several young players in squad & some of them ended as world class players - Kardar, Mushi & Imran. You can give pass to Javed & Wasim as well & YK did try in his short tenure.
Now, why is that in same country, similar system Imran could take at least 4 youngsters often almost unknown to every tour & under Ul Haq in total 4 debutants in 4 year, when U19 team won back to back WC? Was the key da of his generation genetically inferior than Khan’s time? Phasing our over the hill oldies is a process - if doesn’t happen, only 2 explanations - either the game is losing popularity (eventually a slow death in the country) or the system is corrupt.
Unfortunately, looking at the performance of very few U23 players that were fortunate enough to break the iron fist (get a proper chance) in last few years, I don’t think it’s a case of first one. Take a practical example - few years back one of PCB’s serial jokers (Appointed CS several times despite shambolic failures), mentioned in press conference that there is no talent available - so exactly 2 years before next WC, he selected a team to play in SAF, that had 9 players officially over 30. 10th one 29 and 4 those 9 were 35+, led by their 38 years old Captain & that team ended playing 4 spinners at J’burg - 3 of them were offie. 4 years down the line same country won a global event - that’s why I used the word Joker.