I think one day the weak projects will collapse. Robust projects of the market like ZEC, such as XMR, can survive after such a time. It sounds like a solid project to me, MONERO.
ZEC's only chance for long term relevance is if they can massively improve its performance with Zk-Starks or something similar. That may not necessarily be a terrible speculative (I must admit I'm considering it so talk me out of it guys) play but it is a high risk proposition. Monero works right now.