People bet with BTC or EOS never been about the USD amount attached to BTC or EOS
We believe in crypto.
Who creates the EOSbet tokens?
Is the exchange of EOSbet tokens to USD guaranteed?
If yes, who determines the exchange rate?
Why you keep talking about EOSBet tokens? You don't play with EOSBet tokens, you play with EOS and BTC. However, most volume comes from EOS. They can't create EOS like you claim they can. Also every players account is in full control of it themselves as it's an EOS account of which the player only has the private key.
I did not claim they can create EOS, I claimed they can create EOSBet tokens as much as they like and I thought players bet with EOSBet tokens. But that is now clarified.
EOSBet token (BET) is not listed yet, so for the market value of BET tokens is not established yet.
What is the function of the EOSBet token?
However the wagers in their casino made in EOS (again not in control of EOSBet but of the EOS holder) do have market value as you can see on Coinmarketcap as EOS is ranked about 5 or 6th below Bitcoin.
The casino can not steal bets or account balances?
How does investment work?
Again do some own research and all info can be found already. But specially for you:
function of EOSBet token? Receive profit share
Casino can not steal bbets or account balances? No they can't, you play directly from your own EOS wallet of which only you hold the private key. It's the same like when you trade on a decentralized exchange (Peer to peer transaction), they also don't hold your funds like a centralized exchange. So there is no deposit needed. Therefore EOSBet never holds your funds.
How does investment work? You don't. They never was an ICO. All they did was setup a casino. You can gamble normal like any other casino (but provably fair as they are open source, are fully on-chain, even 3rd party statistical analysis have been done), but on top of the normal win or losses you get, you also get X amount of BET tokens when you play. Those BET tokens will entitle you to participate in all profit sharing. Profit sharing is 80% of revenue as 20% is used by EOSBet for operating costs. So actually they did not setup an investment proces at all. They only reward early adapters of their casino with BET tokens. However some people just play for the BET tokens and see it as an investment, they are not actually gamblers, but fundamentally it's only an extra rewards for a player playing games.
Hope this clears things up for you more.