Or to put it differently, the more games you play the higher the probability that you will get a single bad streak that ruins an overall good path of winning streaks (where the user tends to believe the strategy works).
In the end, the house wins and the bankroll is the only source of reference for that.
That's right, of course, it can happen in exactly the same way. In the end, it always boils down to the fact that the casino will win by the amount of the house edge and any "strategy" or "technique", no matter how good, has a chance against it.
Along the way, any deviation from the probability of winning is pure luck - or pure bad luck.
There is a reason why a platform like bustadice has a massive bankroll and quite good profits for their investors and that specific reason is bound to what you just said above. If one looks at the leader-board there are quite a few names who were able to beat the house but zooming out and look for the site profit the story changes.
I have always claimed that this platform has by far the most interesting implementations for a gambling platform (dilution fees to protect investors, max profit bet exactly calculated...) even though I quite do not like the fact that is not a proper dice game.