Coming out of the EU should automatically reduce the UK's dependence on financial services.
Will that change much? People who run those services won't go anywhere. Not so much that the uk needs them. But they will continue to have the most influence in government decisions. And what gets done and where the money goes.
London also wants to leave and be independent, so why not the whole world become city states instead of big countries? I think that will solve a lot of the world's problems as they will be small and manageable.
A few problems with that. True that nobody else knows the problems of their city like the people who live there. And what they want and how to do it. But there is always need for cooperation for some things. Things even large countries can't do alone. Maybe for lack of resources so need to trade. Or expertise in some field. Or industry. Or geographic location. Etc. So the red tape to get many city states working together could be hard to manage for large projects. But maybe biggest problem is those in power wouldn't let it happen. Spain for example is desperately holding on to catalonia. And not only governments but influential groups too that wouldn't want it. Businesses wouldn't want to deal with different standards and regulations in many different cities for example. Etc.