I've read accounts of it being much worse than merely overpriced handling fees. In the case of concert tickets apparently there's a whole system of releasing tickets in batches, some of which are made available to the general public, and the selling out of earlier batches being used to justify (to those who want fans) that now they'll have to pay even more to get them. The secondary vendors (i.e. scalpers) buy additional batches from Ticketmaster, reselling at much higher prices due to artificial scarcity. It's sort of like the diamond trade in this sense. And I also read that Ticketmaster may be even trying to take control of the secondary vendors (if it hasn't already) therefore becoming both the ticket vendor and the scalper, essentially leveraging fear of not being able to get tickets to a concert into creating multiple pricing tiers. Trent Reznor seems to think that artists being in on this, receiving a share of these profits in exchange for playing ball, is not uncommon. After all, it creates a sense of artificial demand for their tickets, elevating their prestige. If you take all these practices together, the least of which are exorbitant handling fees, it sounds more like racketeering than inefficient market conditions due to a monopoly.
That being said, this type of entertainment sector (seeing celebrity musicians in person) seems to be rather price inelastic, and a corporation positioned to leverage this can get away with a lot before the public stops paying. After all, a pop star that you idolize is playing near you: would you pay $80 to see them? If so, why not $150 if it will be a memory of a lifetime? How about $300? It's hard to quantify the value of such an experience as you might with a commodity. It's not like a trip to the cinema where you need to factor in that you need to be able to afford to go several times a year. Maybe a major concert happens for you once a year or three. Now Ticketmaster operates in smaller venues and in other capacities as well, but as we're bringing up Swift I thought I'd discuss this aspect of it. The problem is probably more with the economic system than with Ticketmaster per se: basically if you have people where you want them you can abuse them. That's true in all sorts of sectors, most notably rent prices. Is the government supposed to squash you getting ripped off of $200 for one concert when you're doing worse each month on your rent payment? It seems to me that this is picking on low hanging fruit when the general source of the problem lies elsewhere.