House edge is normal but for me the reason why we lose in gambling is the frequency of us gambling. Let us just say that we won five consecutive times, do you think we will stop gambling? My answer is no, we would still gamble until we lose.
Gambling is a game of winning and losing. In gambling, one cannot win all the time, like it`s almost impossible to lose all the time (this is only possible if you are trying to hit really big odds all the time). It`s hard to discuss gambling generally, games are different, different odd`s too. Games and odds are one side, on the other side is our bankroll and our bet. To answer the question "what to do after 5 constructive wins?" I need to know what game you are playing, odd`s, your bet and your bankroll. More factors you include, better answer I can give, one little example would be "if you are betting with a minimal bet, after 5 constructive wins you will simply continue with the same strategy".My answer would be different every time you change the game, odds, and bankroll.