They are not going against TM in the ticket market though. Putting the entire ticket market in one place is really nice from a ticket buyers perspective. How much TM and the whole ticket market sucks though, is another story.
But they are. TM/Livenation don't just do concert tickets. They do all types of events, festivals, etc. I've seen tickets for golf events, dinner events, etc on livenation.
Not only this, but TM/LN actually own a ton of venues. They seem to grow in size monthly.
"SeatGeek helps people find and buy tickets to sporting events, concerts, Broadway shows, nightclubs and a range of other live entertainment through its mobile app or website." This is targeting TM/LN market for sure.
They don't have the connections that TM/LN have that allow them to gobble up a venue/festival monthly.