When no banks will deal with cryptocurrency exchanges, the entire scheme will collapse.
I don't necessarily have to agree with this observation. Do not underestimate the power of peer-to-peer exchange as demonstrated by LocalBitcoins.
If the government goes full retard on AML/KYC implementation, then it opens the door for people to resist and go all in to the black market where exchange is done via remittance centers, e-currency like Perfect Money and MTO services.
The harder to buy, the price soars to the moon! Crypto will then become more valuable store of value than ever.
When cryptocurrency to fiat conversion is essentially severed by banking interests and governing regulatory agencies, then cyrptocurrencies effectively become worthless baubles. Cryptocurrency is not like heroin or cocaine that has end-use value. It is merely an exchange medium that requires an end-point conversion to fiat. What sane mercantile institution will accept cryptocurrencies for their wares, when there exists no financial institution for fiat conversion?
For cryptocurrencies to have any value, it requires banking cartel support and government assent for fiat convertibility. Can "peer to peer" transactions support millions or billions of USD worth of transaction orders? Peer to peer is a fad, not some revolutionary exchange medium that will replace the current financial institutions.