I think a number of the operators are able to claim compensation from Airbus during the time the 225 is grounded - much of this income is then ploughed into medium types, with the remainder kept for other operational costs or, in the rare case given the poor state of the industry, profit. When they are no longer able to make a claim (if/when the 225 is cleared to fly again), they may have to revert back to using it purely for financial reasons. I think there is still a market for them there - the S92 is not without its own problems.