Farmers who own "thousands of tens of thousands of acres" are just farmers and aren't "conglomerates" or "super farmers" they are farmers. They are just garden variety farmers and sometimes maybe their grandkids in a family farm operation. It's not Unilever, Cargill, Walmart or KraftHeinz buying land. Minnesota and most other ag-centric states have laws against corporate farm ownership. About 50% or less of farm land is owned by owner operators and the other half retired farmers or their heirs. Very little is owned by "investors" (who in local farmer parlance means the winning bidder who wasn't them). When a farm is sold at auction, very newly always it's purchased by a farmer ten miles away or less. 80 and 160 acre farms were antiquated two generations or more ago. Anyone farming 240 acres now is either 1.Part time (with a job in town) with a very expensive hobby, 2. A CSA making their living at farmers markets, or 3. A farmer easing into retirement renting the rest of his land to the son in law.
There are a few exceptions of course. Guys like Phil Sonstegaard and Ron Fagen but a lot of land but they aren't farmers. They rent their land to local farmers. And RDO buys a lot of garbage tree farm land in central Minnesota, and spends a ton of money on drainage and irrigation to grow potatoes. But no one else wants that land.