It must be simple to buy and sell cryptocurrency, that people can buy it and hold. Not all people can buy cryptocurrency on crypocurrency exchange.
It is good that now appear a services that allow to buy crypto for bank/credit cards like
https://www.koinal.io/Still now cryptocurrency are not connected with fiat. If it will be more simple to by cryptocurrencies by credit card more people would invest money in cryptocurrency. It is good that there are platforms that allow to buy cryptocurrency by credit cards.