Alternative to fossil fuels are beginning to rise and they don't compete with traditional crops. Currently these solutions are just reaching the market, but with biotech and genetic engineering these will compete more and more with materials derived from petrochemicals. How will the world change when we can grow alternatives to petroproducts?
https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/jojoba-oil
>grows in the desert
>produces wax and oil that can be used in industry, medicine, and cosmetics.
https://www.climatehubs.usda.gov/hubs/southwest/topic/potential-guayule-commercial-rubber-production-southwest
>also grows in the desert
>produces natural rubber
>produces resins that can be used in medicine or specialty chemicals
https://pmc.ncbi.nlm.nih.gov/articles/PMC11723872/
Mushrooms can be used for novel building materials, packaging, and leather alternatives.