"I wonder though how producers feel about this? Do they want the public to be able to see how many seats are unsold? Would the ticket buyers have a negative reaction? ("This show must suck. Look at all those empty seats!)"
I don't think all the seats go onsale at one time and the availability is staggered often, so a consumer is not technically always looking at the entire inventory. Sections are often held. I dont think it would a problem.
"The sexual energy between the mother and son really concerns me!"-random woman behind me at Next to Normal
"I want to meet him after and bang him!"-random woman who exposed her breasts at Rock of Ages, referring to James Carpinello