As said by DS, yes there's no actual competition.
This means they are not after the competition, they don't care, they were just gambling boat loads and were having fun and that just happily were at the same time as the competition which helped them a lot as well.
It's the same as the other casinos that lists their gamblers who are the top of the LB. And you are right that they are not up with anything but just simply gamble as they do. But if there will be any competition soon, the volume and wager surely will increase because of the wagering requirement as usual and the uncommon names will show up to the LB.