Barriers on trade and travel were raised without purpose other than having barriers.
Even the brexiteers lost their mojo as their purpose of existence disappeared and a particularly incompetent and toxic breed of politicians dominated the political discussions. Those too lost by getting exposed for what they are, destroying the support for legitimate position which those were pretending to stand for.
Absolutely no winners. Any perceived winners are temporary simply because you don't have anything to win by destroying your tight and fruitful relationship with your closest neighbours and you can't move somewhere else.