Hemp almost was the default material for paper products and, in order to protect their business, the forestry commission made "Marijuana": the big, scary Mexican-sounding drug from beyond the border! They even made films like "Reefer Madness" to scare people into banning this "drug" that many folks grew up with in their gardens for the war effort, rope making, and other daily purposes. With hemp rebranded as scary and dangerous Marijuana, people jumped right to wood pulp paper and oil-based plastic as expected.
I imagine the legalization of marijuana (or at least wide decriminalization) will remove the stigma of hemp always being a "Scary drug" and will make people more open to the possibilities of using it for more than hippie clothes and braided bracelets made by college students. There's going to be good money in Hemp use and research for everyday products! It won't just be people getting high off the stuff as the plants themselves have a ton of untapped commercial value and are super easy to grow if you're not worried about harvesting the buds.
And for the people wanting to harvest the buds? Well, there's going to be a serious uptick in people looking for specialized gardening equipment. Lights on timers, drip irrigation systems, fans, fertilizers, and other specialized tools to help those fickle plants grow coveted female buds will be in demand for private growers and professional businesses alike. Growing smokable buds is very, very tricky and will probably end up with a strong but quiet community sort of like the ones you see among fishkeepers. Think Aquabid but with buds instead of fish and hydroponics setups instead of tanks. The cool part is that all the equipment to grow the plants is legal, so if anyone wants a foothold early on it's perfectly fine to get started now. Just know that demand won't shoot up until wide decriminalization kicks in so expect business to be slow for a few years.