That was always going to be the case, and it's the same the other way round - we're no longer in the EU so it's international students both ways.
One of my daughter's housemates when she was at Durham University was Mongolian/Italian, and went to Durham to do a Masters degree (he worked in the fashion industry in Italy).
While he was Mongolian, he was married to an Italian woman, and had lived in Italy for a good few years - but still held a Mongolian passport. Because of this he had to pay International fees (at triple prices, as mentioned above), so my daughter asked why didn't he take out Italian citizenship? - he'd never thought of it, so he did - and got back most of his money, and just paid the EU rate.
Depending what you do, language isn't always an issue - as the international language of science is English - and many (most?) courses are even taught in English - even French Universities have started teaching some courses in English now.
My daughter went to the Netherlands for a 'Year In Industry' as part of her Masters Degree in Chemistry - and worked at Chemelot - basically the chemical industry site for Europe, and the standard language on the site was English (she actually worked for a German owned company). She now lives and works in the Netherlands, currently at a University, and as such has learnt Dutch - but University classes are taught in English - however, where she lives English isn't at all widely spoken, so you can't even talk to people in shops unless you speak Dutch.
Pretty difficult to move to and work in the USA though.
Having said that, probably not so easy in the EU following Brexit
While I applaud your ambition, and you haven't done a 'crappy degree', it might have been an idea to check job prospects before you started?.
As for the bank jobs, it's usually Maths, Chemistry and Physics graduates that they are looking for, as they are wanting Mathematicians - and they often burn them out in just a few years.