Earlier quoted context omitted.
If you tied tickets to names and required ID at the venue (allowing refunds in case you couldn't make it), this wouldn't work and scalping would basically end overnight. The fact that neither Ticketmaster nor the performers nor the venues has ever taken this simple step is the proof that it's not in their interest to do so. Note that events where the promoters are actually interested in having people show up instead…
Yup if you applied for a refund, your ticket(s) could go back in the pool for someone wanting to get one/some last minute. If it/they are picked up, you get your money back minus transaction fees and perhaps a small penalty, and if it doesn't, you don't - but at least you tried and someone else had a chance to get it. Ticketmaster obviously doesn't GAF / care. (The above was for a last few hours or days cancellation…
Or, more specifically you set your own price with the max being what you bought it for.