Nobody is being paid not to grow crops anymore.
Yes, some are subsidized, but as President Trump has pointed out over and over again, farmers have had a very rough 15 years.
There are a lot of operations getting 0.5 to >1.0 million$/yr.
There are maps of owners living in Manhattan getting plenty-o-dough.
Analyze this and get back to me:
It was still happening in 2012. When did it stop?