From that perspective, as i've pointed out before, USSSA has done a pretty good job if you look at it. A quick glance at their website shows that they have 15 separate sports for which they offer programs.
Also, as has been pointed out to you look at cost of entry. The article talks about a $30 entry fee for the season, I believe Creeks is approximate 1100-1200/ season. Which means that on the current rate per game is over 3-4x what it used to cost for a full season.
Then we get to the topic of current players that have families, it is no longer little johnny can ride his bike to little league practice down the street. As I mentioned in one of my previous posts to you local youth leagues are dying as well (little league, pony, american legion, babe ruth) and being replaced by year round tournament ball. It's no longer practice at the local park but each team having kids from all over town(s) meeting at one place. Now mom and dad have to leave straight from work to pick up johnny to drive him across town to a different town for practice (tournaments are even worse). Throw into this the cost of hotels, and possibly plane flights depending on tournament location. You've now replaced all time and budget for dad to play softball at the level of participation you want to see return.
You are correct, it would be easy for me or my grandpa to find out information regarding the convention...in fact it would be the same degree of difficulty that is applicable to you finding out (a simple online search and/or email). Neither of us got a formal invitation to refer to for formal schedule of events.