@benroyce @lori The EU's hold over its members probably isn't about kicking them out or not kicking them out.
Remember where the EU came from. It was an attempt to turn enemies into allies.
Robert Schuman, that wily old guy, said: «L'Europe ne se fera pas d'un coup, ni dans une construction d'ensemble: elle se fera par des réalisations concrètes créant d'abord une solidarité de fait».
https://european-union.europa.eu/principles-countries-history/history-eu/1945-59/schuman-declaration-may-1950_en
De facto solidarity. In the first instance, making it impossible for France and Germany to produce coal and steel independently of each other.
That's what the British are experiencing. They are coming back into the EU fold, bit by bit, because that's where their interests lie. Like a big Switzerland or Norway.
The EU has the Article 7 mechanisms, but in the end what will count are common interests and whether the other members stand up for their basic values. If they do, they have a lot of leverage over Hungary even outside formal sanctioning procedures.