As rule of force is the disease, ancaps at least have the non-aggression principle. Most anarchists have no issue with using force and many in fact encourage smashing the machine and so on.

What does it really matter who owns it? Would you mind working for someone without owning the means of production or the fruit of your labour? If you do not mind that, then isn't that exactly how Berkman and most anarchists view the capitalist system? Surely, being exploited for your labour is acceptable if it doesn't really matter who owns what as long as the work gets done and the needs get met?

The ideas are widely spread, they're just not widely accepted because most people like to own stuff.