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Many people still prefer to keep their assets in crypto currencies instead of banks. Since their assets may be at risk of devaluation in banks, they are likely to get good returns on crypto currencies, especially Bitcoin. If people invest more and more. Assets in crypto currencies or Bitcoin instead of banks, this will also have a huge impact on banks. However, banks have their importance and its importance cannot be denied. However, I don't think the relationship between banks and crypt currencies can be cordial, rather the situation between the two is more likely to remain tense, as both perceive each other's existence as a threat to themselves.
Why don't you mention the risks of investing in cryptocurrency and bitcoin? The risk of depositing money in a bank is that the money may lose value over time and the account may be frozen. The risk when investing in bitcoin is that we can lose everything we have if bitcoin suddenly crashes, or our wallet can be hacked...but in return, we have the opportunity to profit big profit instead of depositing money in the bank. Both have their pros and cons.
Apart from bitcoin, the rest of the cryptocurrencies are mostly centralized, so it may not pose a threat to banks as governments may also be looking to control cryptocurrencies, with the exception of bitcoin.