Don't be complacent. Don't run an online casino without permits, even you are running on cryptocurrencies. Seek advice from local personalities available that are knowledgeable of the risks and pre-requisites of running one in your local state. Also, don't rush things, and make testings to make sure your casino won't be abused and bankrupted by some strategies.
You hit the point.
Most upcoming casino are always good in rushing things. Some don't even wait to test things within their website before giving it out to users. At the end, the site becomes easy to hackers. OP, try not to use already made script but one that has is built from a scratch.
Well it is because they wanted to make profits, they wanted to ride the hype, they wanted to be like the popular gambling sites, but they are making a mistake, they are rushing, just like what you've said. They wanted to take the shortcut because they are jealous of other big gambling sites when it comes to their daily bankroll. Just so you know people, running a gambling site, or making one is not that easy, if you want to build a strong foundation to run it for a long time, you also need your time to make it superb.
The bigger the fund, the better, because you could assure yourself that you have enough security and team that will helps you to run it properly in everyday basis.