question starts to come to my mind as to whether some of the TOCs will ever re-instate catering on trains after the present virus situation. They often don't seem massively keen on it...
I think EMR and GA are both Abellio - but the GA offer is much poorer than EMRs (who have so far generally stuck to the EMT offer) - I wonder if in due course this will be 'leveled down' across the Abellio group?
GA specc'd and paid money for the buffets, I doubt they will abandon them just yet.
The bigger picture is it doesn't need a buffet. It's a 2 hour journey max, most don't do the full length. There are much better quality options around the stations called at. An espresso machine might have looked amazing in the 80's but now everywhere has them and makes awful coffee with them just like the buffet, and there's decent speciality coffee shops near most stations with a much better product.