Hello!
First of all is scalability: The low bandwidth of the Protocol does not allow cryptocurrencies and tokens, thus the use of digital currencies is minimized due to the inability to use in the banking and financial sector.
Second thing - the absence of the corporate market: Users cryptocurrency can only sell and exchange their assets
The next one - narrow application: Cryptocurrencles are mainly used as a means of earning for investors and are practically not used by another part of society.
And to the last one - hard usage: To start using cryptocurrency, a person needs to deal with a number of technical issues