The only thing you can say to offer hope with Davison is that he is only 22. Pritchard was already 23 his rookie season. Davison will be 23 in October, in time for next season, so the age thing is running out of real estate, but he is still young. I have not seen it on the court. I thought at first he had NBA level athleticism but he has not shown NBA level skills or BBIQ so far. And even the athleticism while being sufficient to play in the NBA, it isn't anything special, not enough to compensate for lack of skills.
It doesn't look like Davison is going to make it, nor is Begarin or Madar. These are all second round picks. It would be nice if one of them panned out, but that is probably not the historical probability. My Google AI says that 20% of second round picks ultimately make it in the NBA. I wonder if Davision now counts towards that stat, even through in a practical sense, he hasn't really made it.