Yes, but when other promoters (not Live Nation) book artists at non-LN venues and use Tickemaster as the ticketing agent, all the extra convenience fees are still there.
E.g. Taylor Swift's promoter for Eras Tour was AEG, not Live Nation. And in Dallas, she performed at AT&T Stadium which is a venue owned by City of Arlington, not Live Nation. Ticketmaster was only the agent selling tickets for that Dallas show and it still had all the extra TM service fees padding out the price. In that case, Taylor Swift + AEG + AT&T Stadium got their slices of the pie by using Ticketmaster fees as the "bad guy".
Live Nation acquiring Ticketmaster in 2010 doesn't fundamentally change what Ticketmaster is designed to do: take the public relations blame for artists, etc charging the higher prices.
Ticketmaster isn't the true price-gouger. It's actually the artist + promotor + venue that collectively set the high prices. Ticketmaster is just the administrative computer system to implement the high prices that the artist/promoter/venue want to charge.
For example, top artists can negotiate to get 105% of ticket's face value from the concert promoter. Indeed, people have speculated that Taylor Swift had so much leverage in negotiating the terms of the Eras tour that she got 110% of the ticket's face price.[1]
If Taylor gets 110% of the ticket money, how does that leave anything left for the promoter and the venue?!? With those artists' financial demands, you now have a math problem: where to get the extra +5% or +10% and also pay the promoter+venue without taking a loss? By charging extra fees.
It's a very clever bit of financial sleight-of-hand. The artist/promoter/venue can all charge more money but hide the blame by embedding it in Ticketmaster's "convenience fees", "service fees", "order processing fees", etc, etc. In this way, Ticketmaster is perceived as the parasite.
Your question where Ticketmaster is already assumed to be the "bad guy" means Ticketmaster's deliberate manipulation of public perception is working exactly as designed.
[1] https://archive.is/J5Eg3