I'm no expert in these fields.

But I guess it wouldn't work because if you sell a lot of bitcoins you couldn't sell all at the same price.

Eg. you want to sell 10k Bitcoins. The price is 750$ and the first 50 Bitcoins you can sell for 750$. Now after that there are not enough limit orders anymore available for that price category. So you would sell a lot of bitcoins for much less than the price was originally when you started selling.

And vice versa if you buy them. So I would doubt that you make a profit (because you can't sell/buy at price x and then afterwards the market price reacts. The market price reacts already while buying/selling in large quantities).

As I see it it's the same principle as if you own a large part of a stock, there you could argue the same.