I was investigating this company as an investment option. My due...

I was investigating this company as an investment option. My due diligence was simple: call some greenhouse veggie farmers in different parts of Australia and ask if they see any value in the concept of root zone heating/cooling (among other questions). Every single grower I called was happy to talk with me. What I learnt:
- the concept is much older and widely documented than ROO or their patent(s).
- growers see value in root zone heating, although energy costs can wipe out the gains in some cases.
- not much value seen in root zone cooling.
- some already have root zone heating but for most it was incorporated into the design when they built their facility or made other modifications.
- there are many types and ways to heat the roots of a plant. Pros and cons to all of them. ROO way is just one method but has a perceived pitfall of uniformity across a large area or long run of pipe.
- Farmers laughed at someone having a patent on the idea, apparently it is not uncommon. I’m not an IP lawyer or expert on greenhouse farming, but even aspects of what seem to be the ROO patent are already widely used (ie, insulating exposed pipes between plants). If growers design and install their own system for their own internal use, can they even be challenged, or caught?

I asked the question of this forum if anyone can tell me the unique value proposition of ROO, but not one single response. So now I just watch out of interest and learn how to identify other tell tale signs of a company in trouble. ROO is following the same path as CLI and
CPS, other ASX agtech penny stocks that have crashed and burnt:
1. Tech uptake or revenue doesn’t even come close to showing they are eating into the big market pie they have quoted in the past.
2. Repeat business or growth from existing clients isn’t a significant part of their overall growth. How many trial systems have ROO sold that haven’t evolved into bigger deals?
3. a sudden attempt to pivot to a completely different business. This is just slight of hand but most investors fall for it, which makes it an attractive option. Plant based meats were suddenly going to be a major revenue opportunity? Not in a million years, but easier for an investor to justify throwing more cash at them. It’s about the only time I’ve ever seen ASX preemptively stop a train wreck.
4. press releases that are just regurgitated old news or don’t contain any substantial information. Common practice to include big irrelevant numbers (ie, €1m in this announcement).