Interesting question jp24, but I wouldn't limit the discussion to HSBBW. I think it's similar with most on-line resources. Those same parents probably aren't even doing a google search to learn more about this process (if that had, they would likely end up here). I see little evidence that my son's teammates (HS and club) are doing much of any kind of research, and it shows. Some kids don't even bother to set up their PG profile, which takes maybe 10-15 minutes.
In some cases it may be a difference in learning style (some need face-to-face interaction). Some parents just aren't that invested in their kid playing in college. Some have the mistaken impression that college ball is only for elite talent. Some only trust professional help, and would rather pay someone.
The volume of useful information on the internet really is staggering. Google is now my 1st step for problems with my car, appliances, plumbing, etc. Just the other day I turned the key to start my truck and it didn't make a sound. Dead. Nothing. I checked the battery cables, steering lock, shifter... nothing. I started to call AAA, when I caught myself and checked google first. I had the fix and was on my way in 5 minutes.