I'm sure that bitcoin can last at least 20 years from now, which makes me sure because the number of users continues to increase and of course more and more countries already support bitcoin for transactions.
It could be possible more than that if the government will fully supporting blockchain technology. We aren't fully developed and everyone still on the adjustment that causes some delays.
Assurance to the market will looking for,and if that shown to the community, it surely gains more mecharnts and institutional investors will come.
I think right now, and they are already learning about cryptocurrency and some of the government finally accepting cryptocurrency as a new payment method. The time will come for cryptocurrency to be one of the solutions in the financial section and we don't have to worry with the government because they will support the blockchain technology and I am sure they can get many benefits of the cryptocurrency. Bitcoin itself still trying to survive and it will survive because bitcoin has a large community and many people support the development of the technology.