Well, as crypto grows, it will be harder for them to manipulate. Considering how well known crypto is, and all the hype around it, it's massively undervalued. Hell...the market cap even when it was at it's peak was probably low, just the majority of it was in Bitcoin. As more people get more familiar with it and figure out how to buy it and feel safer doing so, the number holding it will expand greatly. Then they'll need a lot more capital to manipulate it...and there will be more eyes watching.