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~ But remember that these people are doing it and have millions of dollars,
so you need to do something much much better, and can't do that with just a few grand and hiring a developer.It shouldn't necessarily be "much much" better. Imo, just
slightly better would be enough to win the competition. It wasn't like this before the Internet because living in one part of the world people had had little to no idea of what's going on in other parts, and even if they knew about something being better in other country, they couldn't use it. So, indeed, you had to have something much much better to draw the attention of potential customers from other countries. Now you can just copy something nice, improve it a little, and you are the winner.
There's a lot of things that make a casino successful and being unique is just one of them, but one of the lest important ones, which is why businesses are copying each other. It's much harder to get players to pay something new that requires some effort to learn. People are lazy and they often prefer to play a relaxing round of the good old than learn something and painfully find out they're bad at it.
People know that it takes time and money to get good.
The more important things that make a casino succeed are good advertising, a lot of money to throw away, an appealing graphics and good reviews (often paid).