>Communism, or any other system, can’t make that same claim.
I don't really think communism is a viable economic system, because of, you know, people. However, a couple of points should be made:
- Communism has always had to deal with enmity of world's richest and most influential nations (USA and UK in particular). Possibly because communism has had this inbuilt idea that it needs to spread to everywhere, whether they like it or not (kind of like some religions). Could this have been otherwise? I don't know.
- Between 1922 and 1962, USSR's economy grew at an average of about 9% real per annum, despite having to deal with the massive trauma of World War 2. Also, income inequality decreased. Population went from ~140 million in poverty to ~240 million living, um, not in poverty.
So... it is not quite as simple as you make it out to be.