"since capitalism is an approach that lends itself to empire building and the conglomeration of power structures..."

<--only is as much as human behavior lends itself to empire building. "Capitalism" just means people have the right to own property, which includes themselves and their own output. You can be as uninterested in empire building or wealth accumulation in a capitalist world as you could be in one where other people control you and strip you of the right to own your own output; that's up to you. I prefer having choice and am offended when others tell me what i should value and how much of my life i get to keep.

Whatever it's called, peaceful people ought to have every right to be left alone, associate with whomever, say whatever, do whatever, and keep whatever they earn. In terms of "isms" that's probably much closer to "capitalism" than any other, but it's really just called freedom.

It'd be more helpful if people stopped talking in terms of "isms" and spoke plainly. It's people have freedom, or we think some pattern of controls optimizes some objective function which they may or may not share, but we'll force it on them anyway. I prefer not to think of human society in engineering terms, since we're not machines or cattle and we're all different.