This is good. Many people jumped into the scene thinking that this was going to be easy, that you just "build it and they'll come".
The harsh reality is 100 hour work weeks, incredible stress, depression (and its obverse, mania, after winning a deal or hitting a goal).
Building apps is still largely easy. The hard part is marketing and sales.
This is where a lot of founders filter out, and take the developers along with them.