The Houston vs. Texas comparison isn't really fair. Texas has been really good for a while and has not had any chance to draft guys like Correa/Bregman/Springer/Appel/Aiken/Tucker. I guess they had Dillon Tate.
But yeah, Texas' minor league system - much beloved - has seen a lot of flops. I'm also thinking of guys like Mike Olt, Cody Buckel, Martin Perez (yuck), Michael Choice, Nick Williams, Travis Demeritte, Jake Thompson, Luis Sardinas... even Smoak.
Texas just isn't benefitting enough right now from the talent in their system, or that flows through their system. Ex., Leonys Martin (shouldn't have dealt him!)
They are maybe over-investing in veterans at the MLB level?
But I guess if Mazara and Profar click big right now, all will be right in their world.