I believe theres always the desire to get a stable source of income after retirement and this may be realised through setting up businesses with money earned from crypto. You will need to further manage these businesses well so I think the money may not be from passive source.
I think investing in crypto and having a business in the real world may be a perfect combination to earn a passive income in the next five years.Yes i still believe in the power of bitcoin though many people have their doubts on it.It's just matter of taking some risks and building your own faith on it.