I guess you need to understand a few things, cause you're showing an awfull lack of it.
Dolberg is not Dutch. That is the most obvious one. Easy to check as well.
Besides that, Janssen en Depay are totally different situations. Janssen had a one season wonder for a club outside the top in the Eredivise. Good job on him.
Depay had a wonderfull season scoring wise, but the rest of his play fell short.
It's just that the rich clubs of this world are so afraid of missing out on the next best thing that they splash their cash around, draining our league from players if they show a bit of talent or have one good season. "Buy him and loan him back" is somethng we read here more often. Like spoilt rich kids. I want this flavour of the month.
Janssen took the fast way, while most of the people here thought he wasnt ready. I"t can happen of course, but a few years back, Janssen didnt even play at Eredivisie level.
Depay has an attitude problem. At PSV he could be the star player and he was left in freedom, but he was not much of a teamplayer. Every man and his dog could have seen that, but apparently good scouting is problem.
Dolberg, even though he is doing well, knows he is far from the finished product and feels at home at Ajax where he gets time to mature. He already stated he stays if ajax wants to go on with him. He knows United would never play him as first striker anyway as he is too young. They will just splash some cash around for the next best thing. Look at all the Chelsea loanes. Players with no home.
You can't say "This player sucked and that player sucked, so all players from their league must suck." It's a statement so lacking understanding that I was surprised there was no white text. You look at the individual, his class and what kind of head is on his shoulders and then decide.
Our "Monster CB" never played against Depay as he is new to our league. Also an easy fact.
Yes, we concede goals. We don't make these flipping awesome unbeaten runs as United does, while every one is clapping and dancing at their awesome display of football.
No, this season, we concede goals, but we make alot of them too. And we play beautifull for the most time since a long time.
We won't be champions in Holland, we probably will not win the Europa League, since United are on such a different level apparently, but our season has already been succesful.
We can watch the football again from our club that we started to support for that reason, beautiful play.
It might be that we don't show up at all and are bullied around the pitch, but if we play at the best we can, than we, Ajax, are gonna have some fun.
Your post has made ma bit angry. So I am sorry if I sound a bit unreasonable and disrespectful.
And if it's in your personality, be more considerate of how you speak about things.