I have seen this from a few players from our area, all a first round pick then got suspended for using drugs or got in trouble. All drafted out of HS and lots of money in their pocket. One actually became addicted to heroine.
I think for one of the players I know, the parents stopped parenting or never parented in the first place. They told someone later on that they should have made sure they saw where the money was being spent or given it to someone responsible who would watch over his spending instead of dishing it out, though I heard they used some of the money to buy a vacation home for themselves. And the player had an issue to begin with out of HS but everyone kept it quiet.
Must be one of the reasons why Bryce Harper's folks lived with him when he got drafted or he resided with team GM's, to keep him on task. People just do not realize the temptations out there, let alone for a young player with lots of money in the bank.
I really feel this was a big part of Josh Hamilton's problem, his parents fed off of his success and let him do as he pleased.
I know people whose sons got some nice money from being drafted and because of age (different rules for HS dafted players than college) they kept things in check even though their players may have been financially free from their control. Good for them.
My suggestion would be if your sons get drafted and get any type of decent money, make them put it away and force themselves to live off of their milb pay. When and if the time comes to leave the game before they get to make any real money , they will be happy that they have a bit of a nest egg to fall back on.