I feel like this is a self-defeating approach. We don't need an ideal world for that - you rightly identified capitalism as the problem, and it's not utopian to think of other options. Nor do many of them require some sort of ideal man to work, as their opponents sometimes present.

Change will happen - necessarily so, in fact, as more automation is brought online, because the crowd of people excluded from the economy as "redundant" will not be happy about that state of affairs, and it will only grow in size. At some point, they will understand that the real problem is not that they don't have work, but that they don't have a fair share of the automation pie. And things like, say, property rights on means of production / automation stop to matter if most people don't believe in them anymore.