To be Honest, I am now looking for some good casinos to invest, but your proposal is not so clear.
You did't mention how much share could the investor get by 10,000 Euro investing.
And no matter where u come from this is not a small amount of 10,000 Euro, how do you guarantee the money is used properly. rather than enjoyed by someone self.
Also most importantly, how much revenue could the investor be able to expect from his/her investment.
BTW, I am a Chinese, there is not so many Online Bitcoin casino around China, maybe someone want to join Chinese Market.