Easy.

Hypothetically speaking:

• hybrid wheat produces enough to become an economical chemical feedstock like maize
• we all start fueling our cars with wheated whiskey instead of the usual corn whiskey and dino squeezings
• climates and terrains previously uneconomical to cultivate become economical, and natural areas get converted to industrial agriculture
• water usage, fossil fuel based and other non-renewable (phosphorus) fertilizer usage, and topsoil erosion all skyrocket in new areas
• like 10 guys get even bigger hyperyachts while everyone else suffers