They soon find out that law enforcement and tax authorities could track some Crypto activity and they stopped these illegal activities. (operating without licenses and operating casinos in countries where gambling are banned)
Since the developers of Satoshibet started this and is one of the pioneers of Cryptocasinos I'm sure they have casino or casinos running but do not want to associate their new casino with their old one Satoshibet that is to protect their new casino, they just thought it's bad for branding.
It's hard for you if you are one of the pioneers and yet you do not have a share of the industry growth, we may never know who are the developers of existing casinos now that used to be the developers of Satoshibet.com.