Whereas investors could only lose totally on Cryptocurrency when they fail to invest on Bitcoin or other good Cryptocurrencies and instead invest on shit coins, or they save their assets on a custodial wallet instead of a non-custodial one, else Cryptocurrency especially Bitcoin is one of the best and safest investment any investor could think of.
I wonder why anyone would even think of buying shares with a local bank or saving huge part of their money with them, when they could save for a long-term with Bitcoin and make huge returns later, Bitcoin blockchain makes it very secured and the only ways an investor is at risk is saving their asset with a wallet that could easily be penetrated by hackers or fail to safeguard their private keys.
I want you know that Banks are not perfect and Bitcoin and other cryptocurrency are not perfect too. There is limit to what all of them can give you. There are people that have invested into some bank shares and they are happy they did because they bought since when some of these banks have little to no liquidity and now they have became one of the big brands all over the countries and also some continents.
Beside, msot banks existed 50 years or even 100 years before the idea of Bitcoin and cryptocurrency emerge, they were there before crypto came on board and it was because of this limitation Satoshi see that the traditional finance is collapsing and brings Bitcoin into existence and ever since the creation, the banks have been relentless and don't want their system to fail so Bitcoin wouldn't be seen as the messiah that people will embrace.
The main point of discussion is not concerning perfection, infact there's no perfect investment cause they all got their risk factors, I'm just trying to let you know that Bitcoin investment is more safe except when investors expose their assets to hackers or scammers by exposing their private keys or using a custodial wallet which can easily be penetrated by hackers.
Also there were times when people where okay with the barter system before banks came into the system and birthed Fiat, based on your statement, what I'm trying to say is that change is constant and Satoshi created Bitcoin as an alternative to the banking system which has now developed into one of the best and safest digital asset for investment.
Gradually the world is seeing the potential of Bitcoin and sooner or later everyone would have no choice but to embrace it, hope you're aware that Dubai Court just accept Bitcoin as a mode of payment to workers, that's a welcome development and sooner or later most countries that's placed a ban on Bitcoin would have to uplift it.