The service is GAMBLING. GAMBLING is risky.
Keeping my 10 BTC is STEALING. STEALING is wrong.
Sending $9,000 to a random gambling site without reading the rules is stupid. Blaming others is childish.
Stealing is going in the night while you sleep and breaking into a safe.
This is you gouging out your eyes and running into a casino and slapping down $9,000 on a roullete machine and then demanding your money back because you didn't know how it worked.
In your roullete comparison, he would be the guy who walked into the casino and handed the dealer $9000 dollars without reading the fine print. Then the dealer turns around and says. "Sorry, you don't get a turn the last spin was 5 mins ago. Tuff luck." If you think that's how normal business works. Your either a crook or delusional.
There are laws to protect customers from these types of scams. Businesses are not allowed to just take your money and not provide the item or service. They can write whatever they like in the rules, it doesn't change that.
There are way to many companies like this in Bitcoin. We need to stop supporting these crooked business practices if we want bitcoin to succeed.