2. Too easy to join
The real concern with a low barrier to participation is that there is no way to ensure that this technology will not become obsolete for several months. This is another reason why businesses have not implemented blockchain technology. Why invest in a blockchain while only a few months later will have a better blockchain next generation? Replacing and upgrading can be costly and time consuming.
I just wanted to point out this statement of yours. Why do you care on cryptocurrency if it's easy to join? It does make those lives of people who wanted to enter cryptocurrency better isn't it? It will help those beginners to enter the market easily. No hassle at all.