How much would it cost to open a casino (illegal and a legal one)
An "Illegal one kinda depends on what games your offering and other stuff - although most game publishers wont even let you use theire games without a License.
A 100% Legal Casino (not saying crypto for a good reason) again, depends on what games, how many, what payment gateways and where your Gaming License is from. It can go from 80.000€-300.000€+
Theres a third option called "white hat casino" - but I wouldnt recommend it. Its a completely legal online casino which costs about 30k but you have control over nothing. Its basically using the Gaming license from another casino - youre just doing the marketing for your Site.
Is a crypto casino a better option then a regular?
A normal one. Very few people are using Crypto currency as a Payment gateway (btc having $ 1,198.25B market cap and costing 7$ network fees on average)
Your missing out on sooooo many potential customers when opening a only crypto casino.
How many staff members should a casino have?
Dont really need much. You + Dev + Lawyer + Marketing (+Accountant)
But you can also freelance those or do it yourself (although wouldnt recommend it)
How does a casino guarantee profits?
Well you have an Edge over the Players. I think Slots are pretty self explanatory. For Blackjack, Roulette etc. theres no "guarantee". Some days you loose money, some days you win. But overall you have an edge so youre winning long term. (cant unmath the math; edge is for all tablegames about 2% and slots about 12%-1.88% depends on the deal you have with your provider.
Would anyone be interested to partner up and open up a casino?
You can hmu on here if youre interested in doing such things. We can hop together on a talk and discuss our plans/budget etc. and see where this is going. I planned the whole journey already :D