You can win in very specific scenarios. Read the book to get a good understanding. You need to buy ASICs in a bear market, get extremely cheap power, and time the bull market perfectly or predict the next "China bans mining" black swan event. If you do all those things and don't get rekt by the many hazards along the way such as regulatory risk or other market shakeouts you will make out nicely.

For those of us who can't reliably predict the future, just buy and hold the corn. Grug brain wins almost every time.