A big cap means if they are taking the more demand from the market and this is not a preferable idea for me personally. To create a fomo and I'm thinking about ico should not be greedy and then put the low cap to give them more room to grow for the token. Im a bit agree with it but i don't like how it was promoting its platform.
Just like in an article I once read, it is always very hard to grow from high up and that is how I see high cap ICOs. When you have a low valuation, it makes it a lot more interesting for the investors, and this is the kind of market that would grow pretty great as far as I am concerned as they have more space to grow. So in simple terms, the higher you already higher, the more difficult it becomes to grow coupled with the fact that most ICOs today are basically centered on greed just as you said anyway and some investors keep falling for it.