It's my belief that there's a feeling you're trying to make a quick buck off the backs of the people you're trying to get to go to your camp.
I understand the sentiment perfectly well. I've seen it over and over again in the Open Source community, for almost 15 years.
It's unfortunate that many people are unable to cooperate towards a mutually-beneficial goal. If you are one of those people, please don't participate. You would be a hindrance to Bitcoin Island.
I really have nothing else to say to those who think that 3 BTC is prohibitive. Don't come. Please. I have made the barrier to participation as low as is realistically possible, but it's never going to be zero. As far as I'm concerned, that's a good thing. It weeds out the idiots who we don't want to be on an island with anyways.