Since the casino has house edge, the casino will definitely benefit in the long run. Even if the gambler wins occasionally during the game, the gambler is confused and thinks that he can beat the casino. This kind of thinking is completely absurd. A gambler is individually conducting gambling, while the casino is working with all its customers. This means that there will be a huge difference between the casino funds and the funds of an ordinary gambler. This kind of thinking is completely absurd. Every casino is designed in such a way they will be profited.
It is correct that the casino has a house edge, but the winning person's is too little compared to the losers. In this case, the casino would be able to make a profit even if there would have no house edge. And I consider the house edge would be the additional profit of them, and the main profit would be the profit from the losers of the casino.
Obviously the casino's are strictly built for business and that is why the game systems gives the companies more advantages that the players whereas, the developers has already taken decisions via RNG. So players will always be left to try their lucks on catching up with the house edge as contenders.
Perhaps that advantage as the casino's house edge counters as privileges that gives the casino more better profiting positions to be compared to what those players who had only relied on luck before winning had profited in the long time.