That's always the risk, isn't it? Should the infrastructure that ensures the value of anything be still in place next time that you look for it...
Some techy stuff tends to be less resilient than larger scale schemes, be they fiat and inherently fake or not. And 'supposed to be safe' is always quite relative... I never wrote '...according to God's wisdom' but I thought of it and I wonder if we can identify the ways to invest in God's wisdom.