The issue is the redistribution of wealth that has been acquired through force, without this a Canarchist society would rather quickly evolve into feudalism.
Yes, that is why asking how existing wealth should be dealt with is one of my litmus tests for whether or not I think that an anarcho-capitalist is serious about building a better world, or whether they are just arguing for an intensification of the status quo.
The only wealth that has been truly acquired by force is government property (one could argue that any business subsidized by government funds was too, but that's not important, as I'll show later). Any government property is immediately up for grabs upon the dissolution of the government, and most likely, immediately homesteaded by those who use it (That should make you happy, lemon). Any property which was subsidised by the government is likewise now wholly owned by those who use it.
Businesses which required government subsidies would quickly fail, giving those resources back to the ones who are best able to use them. (or at least better)