When there is a sportsbook type of deal going on, I am sure they are going to be doing it fairly good, they must be working with some developers to make it work as well and that means it could take some time but if a place is doing sportsbook from scratch that means they are serious about this, there is no scenario where one place works really hard this much on something and then leaves for good or doesn't care about customers, they are basically proving that they are in it for being awesome and here forever by doing it by themselves.

If they didn't care, they would have just get another providers sportsbook and put it on their website with their own design and that's it, it would be even connected to other place and they would be basically an affiliate for that provider, it would take like a month at tops with a good developer, probably sooner, but they take it seriously and doing it themselves which shows how much they care.