The trick is not to have one idea and put everything you got into maximizing that one thing, it's to make 10, 50 or 500 different things. Some will limp along while some are big sellers. You never know until you try.
I'm not an expert in the business/product development world myself, but I have seen historical examples that prove this very point (late 19th/early 20th century). And we are talking about a time where the markets weren't nearly as saturated as they are today, so they had a competitive advantage of being the first/only ones to have said product.
Ask your dad or grandpa about Millers Falls Tools and then about Chauncey Wing and Sons. Likelihood is they will still have a Millers Falls plane or screwdriver kicking around somewhere, while they will go "Who the f is Chauncey Wing?"
Both started around the same time in the same geographic area, yet one company became a household name, while the other faded off into obscurity.
Millers Falls Tools had something like 54 different kinds of just bit braces
in their catalog at one point in time - not to mention all the other tools, planes, screwdrivers, hacksaw blades, they will sell you the frames too, and an electric drill, and the drill bits to go with it, etc etc. And they started by making and selling a machine for wringing out your wash (back in the days before we had all this fancy indoor plumbing). Got out of that while they still had their shirts and diversified the products they manufactured.
Chauncey Wing (or his son's, can't remember who filed the patent), invented a nifty little tool for attaching pre printed address labels to envelopes. Made a good little business around it for a few years, but since they didn't make (and obviously didn't want to or couldn't make) anything else, and when demand for their mailing label tool dropped off, they just closed the factory. Through luck and preservation efforts in the last few years, the building still stands, with all the machinery still inside, still set up to make these things,
over 100 years later. Such is the story with a lot of manufacturers that failed to innovate and diversify their product lines, except history wasn't as kind to their buildings or machinery. I wouldn't count on anyone making a museum or preserving the facility of my failed business.
IMO, the best quality you can have for a product business mindset is to be motivated to prove those wrong that think your products are going to fail.
The worst approach possible would be the "That idea will never work because of all these reasons...."
Again, I am no business expert, but being stubborn as a mule and reasonably confident are two qualities I can see helping in that regard.