Let's take this case-by-case:
1. Vidal - let's just accept that Bayern are exceptional at transfers, for starters. Secondly, Vidal was always going to move and this was open knowledge. Christ, we had a thread on here for 18 months over the man! That the transfer was done and "Bayern weren't tortured" presumes that we are being tortured. No report shows that the club is being tortured. The only folks being tortured are the fans who continue to wait expectantly despite knowing that the player in question is on vacation an ocean away!
2. Suarez - the courting went on over the year and it was open knowledge that he would move. He'd agreed the thing with the club in advance.
3. AdM - Always wanted to move to PSG even when at Madrid. And signed "in no time"? Guessing you've forgotten all the stuff he pulled by not returning to the club for training (yep, he did that), LvG saying we were expecting him etc. etc.? It was in no way done "in no time".
Big transfers always take time and it would be a myth to say we are not "experienced". We've broken the British record several times. We've also done the deal for AdM at quite a significant price. That it fell short of the record is neither here nor there.
Now, Ronaldo was courted for well over a year. Even after his "prisoner" status etc., the deal took over a year and was sealed in July because we made an agreement with him a year in advance. Bale was a deadline-day signing for Madrid. So was AdM for us. In this case, the player is actually on a vacation (planned) after a major tournament. Given all that, the very fact that this could easily be done within the first half of August is actually very efficient!