yeah really. you should check out some people that use the SOG system and fill their entire garage...even more sometimes. i have a busy schedule and find myself giving a lot of my spare time to my little plant..
It's not too difficult to maintain a garage full of plants, I'm talking about like a small warehouse.
I've read about grow houses getting busted with a thousand or two plants, but it is always organized groups of people. I would wonder if an individual could do that.
If I was planning on growing millions of dollars worth of weed, I wouldn't let ANYONE know what I was up to, much less be discussing it on an internet forum.