From a fares policy point of view, I'm not sure that the railways are going to be particularly concerned. With most trains full or close to it, they're not going to be reducing fares to attract prospective university students on to rail. There's no gain in it for them.
If the government wants to use railways as a tool of social policy in this way, I don't have an issue as such. But if so, the railways need to have sufficient capacity for all the people who 'should' be able to travel by rail. And that means whacking great subsidies.
In Scotland students have traditionally gone to Universities in their home town - attending a university miles away from your home town appears to be a particularly English thing?
I'm not sure that's the case. From my school, I'd say those of us who went to university were fairly evenly divided between the three cities of Glasgow, Edinburgh and Aberdeen - Aberdeen being the closest of the three but still several hours away.
I visited three universities - though only over two trips, as Glasgow and Strathclyde universities had the sense to organise theirs back-to-back. As I recall, funds were available from the school for those who couldn't otherwise afford to go, and the school ran buses to Aberdeen for anyone interested in that university. In fact, going to university open days got me my first experience of a Voyager - I liked it then, and I still quite like them!
There's also a big motivation to stay in Scotland - no fees.
Not technically true. There
are tuition fees for Scottish students in Scotland, but they're much lower than in England and are fully funded by the Scottish government. The distinction is important - if there weren't fees, then other people couldn't be charged them.