As expected, the real questions here would be are this people who were also responsible for the price manipulation that most of us are complaining about?
"these people" in this topic are mainly the big addresses that you can find on the bitcoin blockchain and since most of them aren't actually "people" or whales the answer to your question is not. services and exchanges,... that OP is counting as rich people weren't responsible for the price manipulations.
Well maybe but the fact that there is a person behind every addresses that we were actually talking about right?
This as example
https://bitinfocharts.com/bitcoin/address/3D2oetdNuZUqQHPJmcMDDHYoqkyNVsFk9r sending -15,946.95799204 BTC in just one transaction can leads me to some assumption tho I don't have enough information to what I am actually saying
I am even shock that this wallet is I think not that old since it starts from 3 than 1