Travelling abroad costs money and is a middle class aspiration. Lots of my students don't own a passport, have no contacts abroad to help them find jobs, and lots of the ski season places only seem to want nice middle class white kids.
If kids in Hampshire start off with this many chips on their shoulder they are in trouble,. I recognise, from your posts, that you teach in one of the most deprived parts of the country. However if your pupils are to climb out of the endemic poverty in Southern England they need to be encouraged. I know ski seasons are largely off the cards, but what makes you think it is middle class white kids, given say, catering colleges send kids on work experience and many kids use working overseas as a chance to get away from home because they are not going to University.
It sounds as if the school is skimping on providing careers advice, and is instead shuttling kids off to University as soon as they can. Top courses are competitive. There is an element of luck and performance on the day. It is often worth aiming high.
Though unemployment may be high (and I take your word for this) it is not in nearby Dorset, where residential jobs are readily available in both hospitality and care sectors, more so than ever post Brexit. You don't need a passport.
And FWIW DD found work abroad on her own and without family contacts, using UK based recruitment. if you are telling me that A* pupils in Hampshire are not capable of either applying for a passport or applying for jobs, the issue is deeper than I had realised.