Janssen failing at Tottenham (for now) was the nail in the coffin for this generation. Not sure what went wrong, but the Netherlands always had a top notch striker ( Van Basten, Kluyvert, Van Nistelrooy, Van Persie) in the last decades and Janssen was supposed to be this one's.
Depay is too discountinous as shown at Man Utd, again ending a tradition of quality Dutch wingers. Strootman is the best of the team imo, but injury prone. Wijnaldum is alright, but I doubt he'll ever be a top player ass well. It's going to be a tough decade.