No, sianotes will convert to siafunds at a 1:1 ratio. 1 sianote converts to 1 siafund. There will be (subject to change) 25,000 siafunds total, and each one will earn 0.00039% of host income from renting storage. Nebulous will own approx. 23800 of these siafunds, converting to approx a 9.282% fee. The crowdfunders will own approx. 1200, converting to approx a 0.468% fee, for a total fee of around 9.75%. This matches the terms of the crowdfund, giving the crowdfunders exactly the fee portion that they have paid for.