Many people who new in the crypto world think that Bitcoin is managed by a company and the owners hold all of the Bitcoin and they are selling them into the market when they need the money that's why Bitcoin price is change daily.
Don't think this statement is true instead it's more like most new comers think this business is like that of a ponzi scheme that the early Investors holding lots of bitcoin bags offload it to the new comers. This false reasoning make them fomo into buying bitcoin at its peak with the hopes of having the privilege over the others that'll join the market after they did.
Majority of the users joining the industry are doing so for the fast or quick gains the industry provides. They're are great opportunity to double and some times even 10x your capital in matter of weeks or even days. This cloud the new Investors reasoning which make they fall prey to manipulation from the whales. Since they (the whales) can manipulate the way we see the market in regards to supply and demand, I think it's safer to say they set the price of the market.
For altcoin or shitcoins then this one is indeed true and applicable but for Bitcoin and other top altcoins which do have high liquidity its impossible to think that whales would have always the full control.
Of course they do had impact since they are financially capabled but the market cant really be just easy to manipulate as they like.It always goes to sellers and buyers when we do talk about bitcoin price.
Theres no institution nor group do set the price in the market.It all matters with that basic economics class subject but we cant deny the other factors that can heavily affect it.
Its really just a bad perception or way of introduction on why other people fall into this industry without even knowing the reality.