A casino with a positive house edge (for example: +1%) is a winning casino, because in the long run, it is expected to win money.
This website, with a -7.89% house edge is a loosing casino because players are expected to win money.
No matter how old the casino is...
If OP is so confidence that he made this casino to be in minus house edge than it probably means that he is sure that it will gain some profit. Many new dice sites cant stand out the competition because the sites offer nothing innovative but rather the same copy feature of the old dice sites
If you do some counting based on the house edge and the wagered status, the status is not in the favor of the owner or investor but to the players but still we wont know the result of the investment since it is still new as the site could make some profit in the run.
Maybe, OP confident every players who come here can't control themselves from gambling
Or he did something so he always get profit
Also, i'm still not sure if this site is provably fair
the site is provably fair and you can check them yourself , there is a button to check on this, simply click on the verification tab and put in your seed as well as the server seed to run the provably fair.
It is better if there is a 3rd party verification that will check on this automatically since not everyone know how to do this themselves. OP could set a bounty for it