Will Cannabis or cannabis related industries, be the next production boom for america?

The industry has the potential to generate billions for the government and dealers each year. It could well be a big boom but it needs to be well regulated even if made legal in all 50 states. Just like the Netherlands where it's legal, there's a certain amount a user can carry with them at any point. That's the only thing that needs to be fixed and it's all set to go

Forrest,
Cannabis is an overhyped industry. It's far more unhealthy than the media acknowledges (see articles on the effect of pot on teenagers and schizophrenics) and the people in the industry are unscrupulous (see stories on Mexican cartel moving into Colorado).
While it's becoming more legal in some states, just wait for the lawyers to start suing the shops and providers of cannabis for injuries that occur to lawyers' plaintiffs. Such lawsuits happen all the time to pharmaceutical companies, doctors, bars, for the products and services they sell.
While cannabis is considered cool in movies and some circles, you will find in the long run that it's not an industry of the future.

no one knows the answer to this question

Cannabis is going to be a major industry - there is a ton of untapped demand and I expect federal legalization to happen in the US in the next few years. We still have a lot to learn about the cannabis industry and its impact (both positive and negative) so some of the growth may be influenced by these factors.

If you want to keep up with the industry, I encourage you to follow the companies in that space (some are even listed on the stock market) and see how they are growing (no pun intended) year over year.

Forrest,

Why are grow-houses needed? Why have they just now become talk, when they have existed long before legalization? Follow the media buzz on this one, in states where the discussion is navigational. How you find answers to what you really want to know. Have a wonderful day!