one of the reason is they have mined a lot and they see the fake price and they are hoping too cash it out huge in the future so they have no choice but to keep their support, but for how long they are going to do this.
Yep I agree with this. Its to hard for them to just quit and delete the app emotionally.
If you have invested so much time and effort you will take every chance you can to make it legitime to continue support the project.
Lucky for me I never fell for the Pi-scam, I value my time better.
