Ticket scalping is far different than what you suggested. The secondary market for tickets for sporting events or concerts generally involves buying tickets several months in advance for hot events that will presumably sell out at face value. They are then resold, often far in advance, to anyone willing to pay an inflated rate. This occurs on Broadway too (Wicked, The Book of Mormon, The Lion King) and a few other shows that have sellouts. Just check Stubhub or any other secondary market ticketing website and you'll see them all there. I don't think this is entirely moral, but I think it's somewhat defensible as theoretically everyone had a fair shake at getting tickets when they were initially released. However, this very practice is outlawed in some states or at least heavily restricted.
However, what you've suggested is entirely different. SRO is offered with the express purpose of providing an affordable alternative for people who are dedicated (obviously if they're willing to wait for hours and then stand throughout the entire show) to the show but are either unwilling or unable to pay the ridiculous face value or secondary market price. In reality, the producers offer this to fans as a form of good will. Financially, they could probably offer SRO sold in advance for more than they charge currently and make a good amount more money but they clearly made the decision they want some affordable tickets to be available. Thus, your suggestion is to undermine the entire process which has been put in place (including the fact that you only get your tickets one hour before curtain) to ensure that people who really are committed the show get the opportunity to see it. That is why I and many others here evidently find your suggestion detestable. Perhaps you didn't realize the implications of your suggestion. Either way, if this is occurring, I would really hope people would cause a stir and people working with the show would monitor this.
Scratch and claw for every day you're worth!
Make them drag you screaming from life, keep dreaming
You'll live forever here on earth.