You cannot win long term.... simples..
Casinos would go bust.
I think its more of a case that not everyone can win all the time or casinos would go bust.
In 2018 a mate of a mate of mine was banned permanently from the rank group for consistently winning on roulette over a 14 month period.
He was playing totally within the rules, not cheating in anyway but they took the decision to ban him.
When people say roulette cannot be beaten long term I totally agree when your referring to every player but im not convinced that it cannot be beaten by a few, and I have seen proof of this.
With a balanced wheel, probabilities are still at play long term and can be used with average luck.
With a wheel with a bias can be beaten as well.
From personal experience I would say roulette can be beaten by about 0.01% of players.
The casino already knows of a couple of ways to beat roulette, and have measures in place to combat that, with the martingale being the most obvious one, which is a winning system with unlimited table limits and bank roll, which is exactly why those limits are there, they certainly were't put in place for RG measures LOL
However I do find the OP question quite interesting and have often thought similar, at what point does a system go from just luck to actually a system that works.
How much or how many days would you have to win consistently for to be considered more than just luck?
If you were to play every day and win for 30 days straight is that just luck?
What about 60 days ?
Or 180 days?
A year?
I think this will be an interesting thread........