Do you think capitalism can continue to exist without support through force if no longer controlling production?
I am totaly with you, that what passes for capitalism today could not be maintained if there was no threat of violence to support it. But unlike the marxist theory, I think better capitalism would flourish instead.
I totally buy the notion of having co-ops for restaurants, hotels, and taxies. I think that'd be a great alternative to pure capitalism. Not a replacement, but having them both simultaneously. I think they could co-exist. And if security was not provided by threat of violence, but funded voluntarily (with and without co-ops), I think we'd be better off.
3D printers is a great example. But there are still plenty of things that need to be researched and produced that cannot be made even with the best 3D printers. If those things are worth doing, they are worth investing, voluntarily.
We are not approaching ultra-abundance. Even if we had Star-Trek-style replicators, we would still encounter limitations like energy production and information theory. Even in a culture of ultra-abundance, we would still require innovators. And we still won't need a State for that, if we're smart.
I am not a statist, but I'm also not a socialist. I'm fine calling it post-capitalism as long as whatever follows is voluntary.