That was only part of what I wrote though! If we can keep (and afford) a flat rate for any distance, all good - but if not, we need to look at the tap in, tap out method and I'm not sure how well that will work (but it is in operation in some places already).
If the scheme is axed, then the tap in, tap out method could allow for price capping - but the bus industry isn't as joined up as the railway and might never be. We need to make it possible for price capping to work as you travel beyond counties, and on different operators.
An ITSO card could work better, and if you could only use a smartcard to get the discounts then I guess you'd have a higher uptake. Realistically, it should be the same card you have for rail travel nationally.