If an entity is large and powerful enough, is it possible for it to gain a monopoly advantage and manipulate the rises and falls of the virtual currency market?
its not possible for someone to manipulate the market unless this person is a hacker or some person of the company who has an intention of bringing fake news like dropping of the prices of cryptocurrency in order for them to have an advantage.
You have a point dude in your opinion but what I notice in the market theres a lot of big whales that can manipulate the price of any coin, but this action not take so long maybe in a short period of time or after their gain profit.