I'm currently researching an info product related to an area of the recycling business.
The specific area doesnt matter, but the technical barriers to entry relate to a wide variety of possible small startups.
A lot of people had tried this business, without the proper tools, and failed.
The "right" tools will set you back around $30,000, a significant barrier to entry.
However, I also found a whole bunch of cottage industries producing "poor mans versions" of the "right" tools. For example on one site you can buy a "kitset" for $40 odd bucks that you add your own pump, duplicating a $3-5,000 machine.
From an entreprenuerial point of view, its the old equation of trading time for money that lets the small biz get a foothold in big markets.


Just me