Klopp does seem to possess that innate ability to get the best out of his players, he has proven himself highly capable in this department with practically every purchase he has made during his time with Liverpool. But then it was never his man-management skills that were the issue, rather it's his tactical approach that has come under question. That's an entirely seperate issue though.
Liverpool find themselves in a similar situation to that of spurs, unable to compete financially with the behemoths of the PL such as those previously mentioned, so their transfer strategy requires more finesse (for lack of a better word), more time and significantly more effort. Furthermore it is eminently more risky when compared to the more conventional tried and tested "buying a ready-made superstar" approach.
It is very much true I'm afraid. For example, If United and Liverpool both take interest in the same player, his chosen destination is extremely likely to be United for obvious reason. If either Chelsea or City really wanted VVD, then they would have beaten Liverpool to his signature with little to no effort. That's a fact.
You're using hindsight to further your point I see. Look it's all well and good lauding the purchases of Salah, Mane and Firmino at this stage the season, after they have proven themselves to be capable signings, but how many Liverpool fans or associates could say with any degree of certainty that this would be the case prior the seasons start? Not a one if you are being honest. That's the problem with the "hidden gem" approach, it's success rate is, what, 50-50?
For what it's worth I utterly despise United's "scattergun" approach to tranfers post Fergies retirement, it wreaks of desperation it makes us no better than City or Chelsea when it comes to the destruction of the football worlds economy, but truth be told it is the safest approach - throw enough mud at the wall and some is bound to stick, so to speak. Shameful but effective.
United aren't finished yet either, Woody and Jose will continue to spend recklessly until the team is finally comlpete - in much the same way as Chelsea and City did. This is the modern game apparently and unless you have the financial power to buy yourselves the very best players money can buy, you will, eventually, be left behind.