You have a point but this point has never been new. If it's easy to predict the market with 100% accuracy or closer, won't everyone be rich by now? And if that happens, there will be no liquidity provider because all of them must have gone bankrupt and big guys and banks/institutions (market makers) wouldn't dare to risk their money in it again. So this uncertainty in it makes it survive. Besides, I rather call the market dynamic because it is readable, and if you are good at your analysis, you will be able to know the right direction most times.
We can rich and also poor in the market, it all depends on what we stand to achieve and accomplish. Have you ever come close to accumulating profits but at the end of the day, no tangible profitable results is been recorded? The market can ruined the lives of some many people in the space, it can be challenging for them and some can also find the same market easy. Predictions go out of plans often, not everything we'll be right with our predictions, you do know that? Trading strategies will either make one explore in the market or limits profitable runs and open arms to losses.