There is literally nothing CPEC did that Pakistan couldn't handle itself (and simply bid on international market for any contractor help there and get good competition and save money) if the whole thing is purely a logistics exercise.
If the objective was more industrialisation, again you need to be competitive so people are giving you a genuine lowest price offer on things...and you have inner discipline and organisation to deploy it and grow it.
Premiums add up on top of that inner honest willingness/capacity, the less competitive you are the more of a cost you will have to front...the more cost there is the less people benefit...the less people benefit, the more only those that already have means get all the benefit.
What you don't do is simply do shortcut substitute stuff....i.e replace current local oligarchy with another monolith (this time foreign) oligarch approach. It's not even an oligarch within your borders, sharing not even a cursory or perfunctory fealty to the soil it engages activities/transactions/commitments and all that essential crucial stuff.
In the end nothing beats home-cooking for a reason. Much thought and love went into it over millenia by an ethereal commitment and loyalty in essentially a similar social structure (to nation) but at more itemized level that is family. You would not be alive without those that cared about you when you were too weak to fend for yourself.... and they put you above everything else of import to them for a good long while....for the same was what they went through.
There can be no foreign substitute for these kind of bonds when it comes to a nation either,...can a person of far different outlook, upbringing and thought pattern and ambition and position/station really take care of you like a mother and father (or the patriot equivalent in terms of nation)? They may assist you in some way, but you need to get the basic set up of family correct on the basic things to even make proper use, to hold them up to their word.... and have proper practical context of any "warm" assistance or a more colder transactional relationship underneath it.
Essentially you are either a nation willing to put the work in and reach your ambitions...or you are posing as one and you are simply taken for a ride by whomever sees a benefit for them in it.
@Desert Fox