Yes price is directly proportional to demand, but it is determined by big whales, and their big walls can
encourage us to buy or to sell, plus they speculate on major social network so that is how price is created..
Demand is only used by whales for hype.
Do you really think this high value per bitcoin can still be manipulated by a single person? It might be possible if it was Bill gates or the Rothschild family.
it can be manipulated by a cartel of exchangers and IT IS.
The so called "whales" are few. The price is made by 4-5 exchangers