The theory is simple. Instead of formal concentration camps, you herd people into cities, which can be contained in multiple ways. As in China with its lockdowns, you put the people in massive apartment buildings which you can lock up. Once you install social credit systems, you can control money, ability to pay rent, buy food, drive a car, rent communications services. And you bind people to a welfare system while also removing small business and jobs.
I think this is why the WEF is trying to get rid of farmers and rural dwellers too. The long-term plan is to pack the population into controlled areas and remove independents who could be self-sufficient. This is why the covid lockdown plans tried to destroy small businesses. Which they did.
By taking away gas engine vehicles you keep people bound to the grid and less able to escape. Instead of people going somewhere for vacations, they are forced to use VR once confined to stay in their rooms. Zuckerberg is a tool that for that future.
Also, once people are concentrated in cities it is easy to introduce new plagues and kill them off more quickly.
I live in a big urban city controlled by democrats and I am forever bewildered by people's beliefs about the welfare. Someone making $25,000 pre tax per year doesn't even qualify for food stamps. That's an $11/hr job again pre tax. Then the people making around $14,000 pre tax per year working part time jobs, people who do get food stamps, get about $50 per month, or about $1.65 per day. The memes showing carts full of name brand junk food to represent "welfare" people grocery shopping are laughably ludicrous.
If socialism actually worked the way it is described by its advocates, then yes the whole gravy train concept would exist, but in reality it works the way y'all warn it does. The leftists fatten themselves up while the "welfare" is quite pitiful. Using the examples provided by reality would work much better to drive home the point, rather than by erroneously suggesting that millions of citizens are having their ways paid by the state, which makes it sound like the socialism approach actually works for poor people (it doesn't).
The people living in houses with trash bags for windows yet wearing $600 shoes, those people get money off the radar, usually but not always forms of crime. The government isn't giving them a bunch of money.
Now the situation with invaders being given royal treatment, that's a whole other issue, but with the typical low income urban family living in the ghetto, the government gravy train simply isn't real. They don't rely on the government. They rely on their own underground economy, again often rife with crime.
Communism: "What's yours is ours. And mostly mine."