Banning all forms of escapism will lead to confrontations with the entity banning them(ie the government). And since the government loves staying in power and not get ousted via a revolution, it will allow some bread and games to continue to keep the population numb and contempt.

Just like how in the 1984 movie/book, they were given generous portions of gin to drink at work lunch break even though they had food shortages.

Same how china and former communist states banned a lot of them on paper, but they still low-key exist in an underground economy where the party closes its eyes to its existence until it needs to arrest someone for political reasons and making use of banned vices is a perfect excuse.