The creators worked hard and came up with something not only amazing but a paradigm shift - which is all the harder. I mean look how hard it is for general users to get a handle on this new paradigm. To be the ones that came up with it - that's in the vein of Einstein - in terms of the creative capacity required.
They also took a lot of risk in terms of time investment.
And because of that I don't have a problem with them holding so much from a premine style activity. What's more important is the long term viability.