Not every HS baseball player is looking to make a career out of it. Most kids move on with their life after HS while a few play on.
HS baseball is what it is. You play for your school, try and win county and state tournaments and sometimes you get in the local newspaper sports section for being a key contributor in a game.
HS summerball is more about exposure and individual benefits of playing as opposed to playing for a team with a long term team goal from the start of the season like HS ball.
As for summerball teams being stronger, of course they are. These teams are handpicked unlike school ball where it takes great coaching and a system to consistently field a competitive team year-in-and-year-out as you don't get to pick and choose the student body and the roster turns over every year while travel teams continue to handpick each summer.
I totally disagree HS baseball takes a backseat. One of the dynamics of HS baseball is it emphasizes playing as a team. You do things differently on a HS team, you do more things that are team oriented, on and off the field. You need to maintain grades for the privledge to play HS sports and it goes a long way even if you hang up the spikes after HS and can interview for a college and you can sell yourself by not only making the grade but lettering in one or more sports while maintaining the grades whether you plan on playing past HS or not.
With HS ball, You play for your school and your town. Nobody is going to care if the Diamond Dawgz beat the River Rats. Summer travel teams come and go where HS, you're trying to build a team thru 4 year cycles.
Too much emphasis here that HS baseball is supposed to be the be-all-end-all to college or pro ball and nothing else.
You gotta take a step back and look at the big picture and understand why kids play HS sports and how it can work for them in the future.
Both HS and travelball have their place and both serve a different purpose.