Well, it is up to them.
I just don't see how the community is going to invest 5605 BTC (at current coin prices) to purchase 50,000 FeeShares and then wait for the exchange to make 112,100 BTC in profit to just break even. For the exchange to make 112,100 BTC in profit with a 1% fee they would need to have a trade volume or 11,210,000 BTC.
Considering there are 12,742,100 BTC (or close to) in existence, it would mean the exchange would need to have the equivilent of 88% of all the bitcoins in existance pass through SharexCoin for the FeeShare investors to make back more money than they would by simply selling the ShareCoins at their current value.
Call me a pessimist but...