Are there people/organizations that control the price of bitcoin?
No, control is too strong of a word to be real. Temporary heavy influence, or very similar wording, is probably accurate. Being over concerned with "whales" is a waste of time and energy, with one huge exception: The early Satoshi Blocks (mined by a small group of people) - estimated to be nearly One Million Bitcoins. Those are a topic of serious legitimate concern for this community.