The beginning is not tough at all. If you have money, you can have a gambling site. All that is needed is that you will need to spend enough money especially on marketing.
Also if it is a crypto gambling site, it is better you have extra coins in case of hack. Just as Stake and Metawin did. Leave more coins on cold wallets.
If it wasn't, then everybody would own and run a casino. You don't say something that doesn't apply to all the companies. For all types of companies, you need to spend money on marketing, but for casinos that operate with crypto, security matters above all else. At least for me.
Yeah, man, if you have a few million dollars on the side and don't mind spending a few hundred thousand it's not hard to start a casino. But for most mortals it's expensive, requires a large initial investment, and without a lot of work, knowing what you're doing and hiring the right people you're bound to fail.
The same goes here. It's a fact that is an expensive and very challenging venture and it will need the right people in the right spots but the same goes for every business that someone wants to start. Casinos though need more than a lot of funds, for us the mortals, because they have such kind of dangers. They control millions, so they need the corresponding backup of them and the appropriate control. The days when you could open a crypto-related casino without almost anything, are long gone for everybody...