This perspective sort of ignores the fact that most law firms actively court the RG unis (and a sprinkling of non-RG) over most non-RG ones. Like of course more RG students are going to apply if A&O is hosting a dinner just for them and not for London Met.
Edit: Like it almost comes off as victim blaming for the non-RG students who don't feel good enough to apply.
If you are looking for people with strong academics (particularly sixth form grades), your chances of finding them at a RG uni are going to be much higher than at London Met.
So there is little point going to London Met to “court” students of the vast majority of them aren’t going to demonstrate strong entry grades, compared the Oxford where it will be rare to find someone who hasn’t got that strong academic performance.
But there is an issue of lack of applications from certain universities because of lack of confidence. And that isn’t unique to Non RG unis though. I spent far too much time with certain RG unis trying to improve the number of applications from them, but reality was that was a combination of a lack of confidence and the vast majority of their students wanted to stay in the north and didn’t want to move to London. So it’s not just a confidence thing - it’s also general preferences. Those general preferences also influence things like what the law society or law faculty are willing to to to engage with firms of different types too - and so sometimes the “courting” is not just down to the firms’ preferences but also want the university’s/students’.
Certain RG unis are much more heavily populated by middle class students from the Home Counties who want to work in the city, probably because their parents did. That’s not the case with a lot of other universities.