TLDR
In other words, communism failed because people like stuff. No one wanted to stand in line all day for a potato.
Gramsci knew that economic Marxism was doomed to fail. That is why he suggested Marxism be back-doored into society. You start by infiltrating institutions, such as education, media, sports, and business.
This is what is happening in the U.S. today. Witness sexual freaks in schools, tv, sports, and beer commercials. Witness the destruction of statues and other erasures of history. Witness persecution of churches during Corona—the same churches that were at the fore of society in such chaotic times.