When I have travelled from North Wales to Manchester and been fully checked when buying a ticket and on the train, why should I have to negotiate a line of intrusive G4S staff at Piccadilly just to get out of the station?
G4S's primary purpose is to make sure that passengers coming off North West regional trains have tickets. There are a few legitimate reasons for not having a ticket when you're using local rail services in this part of the network (lack of ticket offices/TVMs, no penalty fares e.t.c).
The continental networks, in general, work very much on the honour system when it comes to regional networks. It's competely different to many parts of the British network. They know that they can't check everyone's ticket, but they expect their passengers to buy tickets before boarding any 'regional' train. There aren't any ifs or buts about it, since passengers know that any member of staff can fine them a substantial amount on the train if they don't have an exceptionally good reason for not being able to buy one. All the investment goes into on-board checks, for example, it's very common to see two guards/inspectors on DB RE services, perhaps even three or four on peak services. Security personnel accompanying inspectors during late nights is a common sight in some areas.
It'd be interesting to see how passengers behave towards staff too. Do they get abusive when they travel on the wrong ticket?
In many cases, I'd say it was harder to accidentally buy the wrong ticket or travel on the wrong train than it is in the UK, especially on some networks. In most high pop. density continental countries, Advance fares are generally not available on regional and interegional services.There's usually no off-peak/peak distinction, generally no TOC-specific fares and permitted routes are often generous. You sometimes even have to prove your railcard entitlement at TVMs.
Fares country-wide in the Netherlands, for example, are basically a case of choosing between a single, day return or day pass, with any further discounts coming from railcards or season tickets.