Filecoin is one of the ones I'd stay far away from. VCs got in before anyone else with special preferences, which taints the whole project. There are alternatives which don't come with the VC problem attached to them.
https://sia.tech/funding2016/ ? How is this any different? I realize that this doesn't concern an ICO, but still there is plenty of VC involvement to "taint" the project.
Sia didn't do an ICO. Every coin has been mined, with no premine (although I assume the developers mined the first few blocks at least). The investors could have mined too, if they wanted, along with anyone else. This seems more egalitarian to me.
Most token sales are like this. There is no difference from the equity markets in this regard, except its WAY more liquid, WAY faster route to liquidity, AND there is no dilution.
Sorry private equity, step to the left.
Sorry egalitarian peons, take what you can get.
If they kept a treasury then they can add supply to the market which wasn't already in the trading float. The contracts themselves typically don't allow for more units to be created, unlike shares.
Contracts can be structured that way, like Numeraire's.