Lack of incentives, like a good RB program and a nice rewards store. Lack of a marketing plan. Lack of planning by poker site owners that it’s best to build a poker economy by establishing the micro stakes games first and let players move up and build the small stakes games from there and so on. It goes back to having a good RB program and a rewards store.
All of this just because of people who bought SwC from previous owners just interested to make money from site. They bought it and they will monetize it untill it die. The main problem is that poker site it isn't house or land - you can't just get money from it forever until you die. Any site need all what you're telling above. Or it will die, sooner or later. This what happened to SwC.
Perhaps the current owner is not having much money to do marketing or promotion to make swc become bigger than before. It was one of the most active bitcoin poker site but now it looks like a new site with no good plan to survive and to get better/bigger. Yes it seems that it will die sooner unless there is a big change in the management who can manage the site better than what they have at the moment.