I don't recall ticket prices even being part of negotiations. Stagehands don't regulate ticket prices.
"All our dreams can come true -- if we have the courage to pursue them." -- Walt Disney
We must have different Gods. My God said "do to others what you would have them do to you". Your God seems to have said "My Way or the Highway".
While labor often is a large part of the financial equation, my observation is that producers do a lousy job of reigning in their creative team. This often results in stagehands standing around or making changes because someone in the creative team wanted something different -- didn't communicate it, didn't draw it right on the plans, or simply weren't at the theatre to give adult supervision. Blaming these costs on labor when management is frequently disorganized is passing the buck.