(Wikipedia) Totalitarianism is a form of government and a political system that prohibits all opposition parties, outlaws individual and group opposition to the state and its claims, and exercises an extremely high if not complete degree of control and regulation over public and private life. It is regarded as the most extreme and complete form of authoritarianism.
It’s efficient. No fighting between a million little kings for profit and market.
Smaller grocery stores. One brand of orange juice. One brand of canned corn.
I think the issue is that you are hypothesizing what you think you’d like, while ignoring all the real life examples that show things can go astray. For example, you talk about the benefits of not having a million little kings w/o acknowledging that the one kingmaker can make the head of groceries his inept brother-in-law who pockets half of the funds.
Instead of responding to people why you like totalitarianism, how about you show reference a historical example that was beneficial to a society?