Those are super tankers and they stay for months or a year in the same level.
They keep training their players and give a lot of friendlies every day.
The old days there were the Vietnamese and Chinese , doing the auto-farming.
Gathering some hundred greens when they were sleeping at night but know this trick it doesn't work.
There are some heavy token buyers but few. I have met only 3-4 in my whole TE career.