A "market analysis" should not be confused with a "marketability evaluation". A market analysis merely considers trends, consumption, users and types of products in the market of your invention. Many of the BAD Guys sell only a market analysis to inventors and not a marketability evaluation which is really needed. Though it has some useful information, a market analysis has limited value to inventors since it does not tell them anything about whether their invention is potentially marketable.
Below is an example of the significant differences between a "market analysis" and a "marketability evaluation" for a new toothbrush invention that brushes teeth 25% faster than conventional toothbrushes called SUPER BRUSH.
By merely looking at the "market analysis" it appears that the SUPER BRUSH would be a great invention to invest thousands of dollars into which is exactly what the BAD Guys want you to think. However, by considering the "marketability evaluation," it is obvious that the SUPER BRUSH does not have much of a chance for making it in the toothbrush, hence a smart inventor would not spend anymore time or money on the SUPER BRUSH and go onto the next invention!