Yeah, but I would think there's a corner of the market that TM doesn't have yet...maybe the really small venues. Start with those as MVP/proof of concept and then "wow" the medium venues, repeat.
There are a handful of smaller companies that have enough market share to be relevant. Ticketfly comes to mind. Parent mentioned an important point: Ticketmaster is owned by Live Nation, which also owns many of the venues (eg, the entire House of Blues chain). Independent venues are becoming more scarce, especially at the 500+ capacity size.
I've tried and failed in this space. In your MVP, you have to be relatively feature complete and be ready to handle chargebacks, CC processing, customer service, and be willing to sustain on whatever price you set as the surcharge -- the established players are often "free" to the venue.
