novaphile
Quester of Doglets
This is not true at all. You don't need a fully developed exchange to facilitate trade or learn the current price of a crypto. Exchanges are just a convenience. As with any other product, you just have to check the ads to see what sellers are asking or buyers are offering.
Hmm...
This is true but only just.
You can buy bitcoin from anyone that has some to sell, all you have to do is give them money, and hope that they'll type your wallet address into their wallet software (and the amount of bitcoin you've bought), and wait for the network to validate that transaction...
However, you would need to find a person with bitcoin to sell, and that person has to be trustworthy.
In real life (meatspace) you can buy foreign currency from any person, but in practice people prefer to deal with currency exchanges because of similar problems.