It's most unlikely to go to zero. Going to zero will mean it doesn't exist anymore we can incure heavy loss but we can't lose everything and return to a zero point. So cryptocurrency is profitable if we play it right.
All things are still possible to happen, only if it is clear that zero will not be able to happen in the near future, so do not say It is very likely that it will not be zero, because it is still possible to happen, and the matter of profitability in cryptocurrency clearly exists if someone knows how to do it.