They are now running back their sig campaign which is good indication that they want to make this casino became a competitive one so I guess the question remains here how consistent they are running this marketing because the winner here will be the one who can afford to make their campaign last long. Budget will matters because spending lot here is necessary since that's how business should do to spread their casinos existence especially this is a big forum.
How long or not the campaign lasts really depends on the budget and how effective their campaign is here.
The industry is highly competitive and it's not just about who pays the most, but of course there are many other things that can help a casino last long including a good reputation, customer service and etc.
It's hard to compete to be the best without a big promotion budget, but if the marketing team is consistent and can attract lots of new customers then no matter how hard it is at the beginning it will be good enough in the future.