They can grow up and realize that ROI on capex is never guaranteed. No risk, no reward — and the risks are real. That’s life.
However, if we institute a new dev fund, personally I would prefer for miners to be able to ROI on their machines before October 2020.
Semi-related note: For a PoW coin to be secure, mining needs to be profitable. But it doesn’t need to have great margins.
The difference here is that she is being prevented from leaving. That’s what abusers do; they isolate their victims and make it hard (both emotionally and practically) to escape.
Zcash doesn’t do that. It is very easy to stop mining ZEC, sell your ZEC, etc. If someone tries to guilt-trip you about doing so, you can just… ignore them. The situation is entirely different.
(You may not be able to cover your losses by selling, but again, that’s what investment is — accepting risk in exchange for the chance to generate alpha.)
Moving to a new country is orders of magnitude more difficult than exiting ZEC. I don’t think the analogy is fair.
Here we fully agree 
I don’t understand how a system that is fully voluntary can be compared to socialism.
I’ve been thinking about this also, and you may be right. I made a comment about that here: Future of Zcash dev funding — megathread / everything in one place - #146 by sonya