They should, but for large numbers of people these days it is far more relevant to say 'People should be able to go onto a ticket-selling webiste with no prior knowledge, buy a ticket to their destination and not be fleeced in the process'
Who would turn up at a station without knowing how much the journey will cost you?
This sort of thinking skirts round a major problem in relation to
perception of railways. To explain my point, think about me and flying. To be quite clear, I am not a frequent flier - my last trip by air was to Prague for a weekend in 2017 and someone else bought the tickets.
Previously I had been to High Street travel agents, generally Thomas Cook because it had a branch locally, who had looked after 'everything' that was alien to me - flights, transfers, hotel and currency. For all I know they were ripping me off but it was all very simple with one bill to pay.
Previously, work flights had been organised by my employer's travel agent.
Back in the 1980s I worked in London and knew that you had to walk into the British Airways, Air Canada or whatever office and book a ticket many weeks in advance. I have even done walk-up tickets at an airport for very local flights between Scottish islands back then.
So if I wanted to or 'had to' fly to somewhere right now I wouldn't have a clue what to do. My
perception of air travel (backed up by a high proportion of nightmare journeys and experiences over the decades) is that it is utterly vile. I will be lured on by apparently cheap but inflexible fares, discover that I can only take minimal luggage, will have to get the the airport at least three hours before a flight at an excruciatingly unattractive time (so probably an overnight stay near the airport), spend ages dragging through security and have to turn out my luggage because there's a metal bookmark in it or something, invariably fail automatic passport checks because I don't seem to bear any resemblance to my photo, will wait hours for a delayed take-off, be wedged in the middle of a row between two overweight strangers, arrive at at a strange airport in the middle of nowhere at another unsociable hour only to find hoards of rip-off and scamming taxi touts wanting to take me to my destination. And that assuming that there aren't further massive queues and delays at immigration and baggage reclaim.
That is my
perception. But oddly people that I know actually seem to enjoy and look forward to travelling on holiday by air. Beats me!
And 'No' I wouldn't know how much the journey would cost in advance (beyond the fact that it wouldn't be anything like the same as the 'flash' in a newspaper ad or on a billboard).