Do large institutional buyers now have more influence on the market than regular investors?
People with larger pockets will always have more of an advantage, and when they can acquire more through the same means regular buyers do, they can easily influence the price. The same way, they can also influence the price each time they want to dump their holdings. To an extent, I believe they have more hands to influence the market both ways than retail investor.
Do you think Bitcoin still moves mainly because of ordinary buyers and sellers or have institutions become the biggest force in the market?
I believe Bitcoin price movement is being influenced by demand, policies, and selling/buying pressure. One body doesn't control every action that contributes towards how it will react; the effect is what will vary.