regulate the ticket process for concerts and sporting events.

The reason why tickets sell out so fast, for many of the most popular concerts, is that only a small fraction of seats are sold to the general public. Many seats are reserved for credit card and fan clubs, giveaways to the artists, promoters, venues and other VIPs. What happens to some of those tickets? You guessed it, they're being scalped & by the artists and venues themselves.
For example, in January of last year, a Justin Bieber concert in Bridgestone Arena (Tennessee) sold only 1,001 of its 13,783 seats to the general public. That's only 7%. Local investigative reports also discovered that some of those tickets were allocated to Bieber's management and ended up for sale on the secondary market. Katy Perry's tour rider in 2011 in which she reserved them directly on the secondary market