One thing everyone in the UK can agree on about BREXIT is, "this is a fine mess". The world must be looking at the UK and thinking how stupid we must be! I am sure there is brinkmanship going on on the part of the EU and UK government, but at the moment we are heading (by mistake) for a no-deal BREXIT that no-one wants.
The EU does a lot of trade with the UK, we need EU low skilled workers in our fields, care homes and hospitals. The EU will miss our money going into the pot. The EU is desperate for other nations not to leave.
Time will tell how this will pan out.
See https://www.bbc.co.uk/news/world-europe-46617152 .