Dublin doesn't have more people working in software than London. It isn't even close. I have seen estimates which suggest the total tech industry employment in

Dublin doesn't have more people working in software than London. It isn't even close. I have seen estimates which suggest the total tech industry employment in Ireland, not Dublin the whole country, is something like 100k. London had this many open vacancies in tech per week earlier this year. And that is assuming all these jobs are equal which, of course, they are not (you are unlikely to open a support centre in London). London's VC market alone is multiples of the next largest city in Europe (which I believe is Paris). I think Manchester is actually a larger VC market than Dublin (and Edinburgh is probably coming close).