The problem Wenger has, is that because we haven't got a top quality striker, and all the other clubs have, in some cases more than one, it's going to be even more difficult to catch them up.
If we do buy someone like Dolberg, we will have to wait for him to get used to the PL, and there is no guarantee he will make it anyway, and while we're waiting there is just as much chance of all the other top teams producing a good young striker as well.
I'm not sure how Wenger is going to get out of this mess, because we can't, or won't, splash out for a ready made top goal scorer and for us to wait even longer than we have for a player like Dolberg to come good is unacceptable.
Like you say, he should have gone for a player potential, after selling RVP, that might have turned out to be decent quality.
Other clubs must have better scouting than we have because they all seem to have what they need.
Why are we still waiting?