Meh. I've given lots of plausible reasons and circumstances why someone would need such a ticket. If you can't picture them yourself, that's nothing I care.
You can give plausible *reasons* for anything. All the reasons you've given are plausible reasons for buying the ticket - not paying the price. If the ticket was £20,000 your plausible reasons would still be valid but it would still be the case that nobody would buy the ticket. The existence of plausible reason does not prove that people actually do it. It's plausible somebody may travel who collects tickets and particuarly wants a high priced FOR as well, you can list plausible reasons for ever and a day. It doesn't really change probability.
Think about it rationally.
Lets take the pool of people who wish to travel from Penzance to Derby. It's not big, but it exists.
Now remove all those who don't wish to travel First Class.
It's much smaller now, but it's still there.
Now remove all those who don't wish to book in advance.
It's even smaller now.
Now remove all those who don't wish to break the journey in random locations on the way.
We are getting into the realms of very very small numbers now.
Now remove all those who must travel before 9.30am from Penzance.
Now the number must be so small it almost doesn't matter
Now remove all those who don't fall on the floor laughing when the TVM requests £600 in cash.
And we have the number of people who would buy this ticket - after having met all of your plausible reasons.
But at the end of the day neither of us can win without the figure of how many of these tickets they sold. I suspect it's zero. You suspect its not. We'll have to leave it there, forever wondering.
I don't think either of us would disagree that potentially, XC could generate more revenue with almost zero downside by not charging £600 for this ticket, or by allowing travel by any train from Penzance (Isnt there only ONE train you'd need to buy this ticket for anyway?) on the Offpeak which at £350 is hardly cheap but is also more reasonable for the sort of journey it is.
Also, if its true that they previously DID allow travel by any train on the offpeak until earlier this year then it means that demand for this Anytime ticket prior to January 2012 must indeed have been zero, as I said