People are naive and mostly with short memory. I would say that people who find out how this system is actually working will not be willing to jump into another pyramid system, however the majority of users is probably not aware of it, they are just here cos they think they will earn, when they will find out that earning for big majority of ppl is not really possible unless u are rich or have rich friends, they will most likely stop using Steemit. If there will be other similar alternatives they will jump in and get scammed again. Let's see what will Steemit bring if anything in near future.