In all seriousness, I really do not like the stuff. My wife loves it and would eat a bucket full given the chance. I also do not care for Dom so rather glad that also doesn’t make any appearances on BA. I believe a caviar service is (or at least has been) offered on Mosco flights and you will find sprinkles of it on some appetisers and canapés but other than that I suspect the reason it is not offered systemwide is because of cost.