it is wrong to believe that everyone can earn here. everyone here can easily lose their money. at the same time, the more people in this market the less income will be. Traders can still earn not bad, but here you need good knowledge that not for 1 year will come and also a good start-up capital. my personal opinion
With respect to the more people less income, that is something I would not believe, probably that can be applicable to activities that are easy to do like bounties and even depend on the type of bounties.
However, there are some skills you can build for yourself that will absolutely give you an edge over time and there will always be a space for you to earn very well as long as you want, but that simply depends on how ready you are to learn.