Cryptocurrency faces neither. The systems used to create, store, and transfer them are widely available. The network on which they can be transacted is ubiquitous. Cashing in/out is easy.

What's holding the concept back is its fundamental and intrinsic costs (imposed by the algorith / concept itself, rather than economic limitations), opacity, inferiority to trust-based systems (e.g., credit payments or ordinary cash currency), inherent risks (both economic and criminal), and lack of safeguards (individual / transactional, systemic / institutional).