It isn’t a long term equilibrium state. Eventually it’ll either die down, one side will be crushed, or there’ll be extensive violence that could end up in a civ

It isn’t a long term equilibrium state. Eventually it’ll either die down, one side will be crushed, or there’ll be extensive violence that could end up in a civil war. See the European wars or religion or the Dutch Revolt. For a less violent result see pillarisation, where different religious or political groups have parallel institutions. https://en.wikipedia.org/wiki/Pillarisation https://en.wikipedia.org/wiki/Pillarisation