Why do you think good altcoins fail to keep going? It seems there are some that are good and people collectively have put in tens of thousands of hours supporting, but the team decides to give up midway.
I also habe that fustrstion. You follow a Dev for a very long time and then they just give up and leave or the Dev stays for some time and leaves and the coin is not doing well bit getting better and he will only leave and not return and we hold onto a worthless coon when the Dev dumps of he is a scammer after he runs.