That is their value to some people. If they price every ticket at the highest price a ticket sold for they will mostly have unsold tickets and will lose a huge amount of money. Venues and artists benefit from full arenas because they make money from selling other things so they already have an incentive not to price tickets too high.
The other thing they could do is use dynamic pricing.
They also delist previous titles from stores. Forza 4 disappeared a while ago, 5 will be gone soon. Wouldn't want anyone buying the older, cheaper, maybe better titles instead of the latest one.
Its still somewhat unusual for publishers to kill their own games leaving only the newest. Forza 5 is the only Forza game available, and its $60 outside of sales.
Care to explain?