People who start these coins should understand how a currency works. Be much more successful.
Give you a hint, a nations GDP is what sets the value of a currency for which is used to trade that value on exports and imports. That is what creates that value.
One reason China's economy is about to implode is due to the way they measure their GDP - it is an artificial method, by measuring the production and not the sale of resources. Thus whole cities build for millions to live remain almost empty.
So, if the economy implodes, will alt-coins be anymore useful - no. As they are not recognized as being associated with trade values outside of personal barter - which will always be very unstable.
If you want to make a product like bitcoin you have create value in ownership not necessarily in the trade - like gold. The more crypto coins that are released, the less valuable they all become.
With crypto currencies they way they are now - is no different that bank notes in the 1800's - any bank could produce them and people would trade with them. It failed, due to the instability of the rate of trade - just like cryptocurrency is doing today.
If there was to be a real trade, it would be to have something stand as value to the coin. Have it be a natural resource or like. Could be anything that has a value, thus the coin becomes a stock or commodity.
I love the idea, but the execution is the problem... in five years this will be remembered as a fun experiment. And someone will figure this out and make it real - most likely Wall Street.