“Send them to the country, there’s always lots to do out here.”
Not for hundreds of millions of idle workers.
The elite will also continue to impose greater restrictions on land and farming.
Sure, but that's a different problem. You are presuming a scifi world of elite versus future soylent green. In the current reality we have a spectrum of elite, tradesmen and various others. The elite will always need tradesmen and the latter will wield some actual power. The elite can get a lot of what they need from automated factories, but there will be non-elite knowledge workers to run those and come up with new products, new production techniques, etc.
While my rural area is very uncrowded, it contains a very diverse set of hereditary landonwers, various tradesnen, service workers, and factory workers along with the obvious farmers and hunters. Virtually all of them can make a living doing what they are doing. Add a million people from the city and it would not be so easy, so my solution has its challenges.