The core problem I think seems to be time. Everyone lower than C-level is packed full with work, no matter if in academia, government or the private sector.

So, when someone comes to me with an issue and shows they have done at least done the basic legwork, I'll be more likely to help them out than someone who just says "xyz doesn't work" but has done zero work on their own to troubleshoot it, because I don't have time to guide some junior on utterly basic stuff - and that is why so many job postings say "x years of experience" required: the existing staff is drowning and can't handle the enormous workload of training juniors.

Obviously that has negative mid- to long-term consequences as when no juniors get trained you'll eventually run out of seniors, but I have no idea how to get this fixed, especially not on a societal level.