You can't be the house without a structured and well detailed business plan. Then in this plan you will have your people which will also give you different suggestions to choose from. However as a bare minimum you need at least 50 Bitcoins and that is a low amount because a whale can play and if he wins , you have lost your casino. True good casinos start with 500-1000 bitcoins.
To be honest. I was surprised about the capital to start Bitcoin Casino and being a house. Because I think, the minimum capital of 10 BTC is enough to be a house. But evidently, the minimum capital 10 BTC is not enough because even with 50 BTC of capital we are at risk of losing the casino. Damn, that means I really don't understand the theory of being a house.
Honestly I dont want to be rude but @swogerino overexaggerated the issue. Its
nice to have a team, have a lot of money to invest, have a business plan, a roadmap......... but fuck it lets face it, bootstrapping with a single good developer that know how to market a business with minimal investment is not unheard of.
If you plan to open up a casino, you could very well do it with as low as 1btc. Of course you will adjust your payouts accordingly, you cant afford whales just yet. But there are a lot more questions to answer before that, the 1st one being : why will people gamble with you? If your casino comes with the same content as every other site : Live casino, slots, sports, card games, dice.... You're already treading muddy waters, the market is saturated with that stuff. So think of something new and fresh, build your community.
If you simply cant innovate in content, you need to up your marketing bar : innovate in bonuses, marketing campaigns that reward on-site bonuses with goals just close enough to reach, but far enough to make the majority lose and deposit out of spite.. All kind of ways that make you lose a minimum, hell, casinos have marketing techniques that
MAKES them money. Shit's dark, but everyone does it.
If you still cant come up with something... theres always
boobs, boobs work too.