SIR-ZRH requires very pink glasses indeed! As atakacs say’s it depends on pricing. I don’t think for 1 minute they’ll get anywhere near CHF100 round trip – especially on a 50 seater! ZRH is a very expensive airport to operate in/out of and it’s slot constrained at peak times so you can’t just drop in morning, noon and evening.
In other news I heard that Powdair have taken a financial stake in their AOC partner BackBone Aviation. They’ve also hired Sean Pettit of Virgin and Fastjet fame as CFO.