It's not the faults of this people for owning a large sum of Bitcoin, it's their reward for believing in Bitcoin when others didn't and refused to invite just as your friend is doing now. Also I think some of them creating a service that helped in the popularity of Bitcoin like Cz launching an Exchange (that no matter how we don't like him, he has helped in the popularity of the currency).

As we have more people like your friend (which we do) keep saying they don't want to invest then they're giving more opportunity to this whales that he's afraid of them owing more Bitcoin to keep on accumulating more Bitcoin because they believe in the currency and will be buying more whether people like your friend buys or not. If we understand the power and benefits that Bitcoin holds, we won't be bothered about what others own but more concerned about the quantity we can own ourselves.

Those guys won't want to sell their Bitcoin because they still understanding the potential that Bitcoin holds and them having a large quantities of Bitcoin puts them at the top of the food chain so instead of selling they'll be looking to add more to their bag. Also if the whales are selling they won't likely be doing that on exchanges but Over-the-counter (OTC) and it won't have any impact on the market. Also as the Bitcoin gets more adoption we'll have more liquidity to cover up any amount they want to sell and it won't have any or little impact to the market.