If you accept that socialism can exist alongside capitalism, then it most definitely has been realized. Travel to just about any rural area and you will find co

If you accept that socialism can exist alongside capitalism, then it most definitely has been realized. Travel to just about any rural area and you will find co-ops galore. A very least in providing means of production to farmers, but quite often beyond – telcos/ISPs, grocery stores, gas stations, etc. If you see socialism as only some kind of state where capitalism no longer exists, then sure, we've never gotten there. Probably never will. Hell, even if post-scarcity communism is someday realized, it is equally possible that we got there by way of capitalism. Just because someone theorized that capitalists would put up roadblocks on the way to post-scarcity doesn't necessarily mean they would or that they couldn't be overcome.