I am starting to believe that large, established, companies with large market share and large patent portfolios have little use for 95% of their patent portfoli

I am starting to believe that large, established, companies with large market share and large patent portfolios have little use for 95% of their patent portfolio. First, many patents are either weak or outdated by the time they issue. Maybe the company has changed directions from the time the patent application was filed. Or, there also might be a "file first and ask questions later policy" for many companies, so that valuable inventions are captured along with the junk patents, a bycatch of sorts. Then, the company can enhance their reputation in some communities by giving away patent rights. Second, the purpose of patents is to exclude others from making your invention for a period of time in exchange for teaching the invention to the public. This can be useful for smaller players, including individual inventors, who do not have a large market share and comparatively little money. Larger companies do not have as much need to exclude competition through use of IP, because they have already excluded competition in the market. Although, there are still the clash of the titans, such as Apple and Samsung.