The lessons that the EU will – hopefully – draw from Brexit should give it a good chance to weather other storms.
Boris Johnson would face a specific handicap in his talks with Brussels. The desire to grant him any concession is virtually zero.
Even in case of a hard Brexit, the UK would probably end up having to accept most of the Withdrawal Agreement.
Many on the continent may now see an orderly “velvet” Brexit as the least bad among the realistic outcomes.
As a million people march, Britain drops deeper into the Brexit black hole.
Any final Brexit deal will come with a lot of cherry picking.
But it will be EU that will do the picking – not the UK.