SealinkBF - as long as Ryanair flies routes without competition or is substantially cheaper than airlines providing a bit of TLC, all without compromising reliability and punctuality, there will be an ongoing consumer demand for FR's product.
This is partly Lufthansa's rationale around Germanwings - if the difference after including things like luggage between a better airline's lowest fare and Ryanair is small, then people will often spend a *bit* more cash for quality.