Crypto solves (to a degree) the problem of a huge amoount of power belonging to the few people who run the financial system. Huge consentration of power is not a good thing. Power corrupts and so on. Crypto puts everyone on equal footing - rather than say the people/companies who have a banking license enjoying an unfair advantage over everyone else (like the power to create money from thin air in the fractional reserve system).
The credit card companies, PayPal and the like get to decide which companies are worthy to exist and which not. If they don't like a business, they can just cut them off from receiving money. E.g. VPN provides who don't keep logs are all banned from receiving credit/debit card payment, PayPal, etc. - they have to resort to receiving cash by post and crypto.