Through experience, experience costs money and mistakes but you can't afford either. The other players believe they can do whatever they put their minds to also except they have heavy business backgrounds making deals and have big money to invest. It's not that you can't, it's that you can't compete with the market structure. Its great that you have aspirations but I saw in another thread that you are newer to growing. If you're really serious start a 5-10 year plan for when things may level out. Get some business knowledge, you don't know what you don't know and I mean no offense but dunning Kruger syndrome is a bitch.
Why do you think big companies shuck the inventor to the side? They don't know shit about marketing, sales, b2b, etc etc. They don't know how to actually make money!! It sounds like thats where you're at, read a basic business book, read investing for dummies (seriously it's pretty good) find some good resources, practice growing and git gud. Set real achievable goals with deadlines and work towards them.
Depending on where you're at you need to already own or have a deal for the land or space in order to apply for a license to grow there, which you're not guaranteed to be granted.
Edit: it's been a while since I've read these but this farm has done a lot to cut or reduce costs and iirc have not turned a profit in 2-3 years.
https://www.cannabisbusinesstimes.com/article/the-25-pound/
https://www.cannabisbusinesstimes.com/article/how-bosmere-farms-cut-production-costs-oregon/