As has been pointed out, if the patent expired on selling it would obviously have no selling value. But beyond that I'm really confused by your argument. You s

As has been pointed out, if the patent expired on selling it would obviously have no selling value. But beyond that I'm really confused by your argument. You seem to think that someone files a patent because they hope to exclude people from its use, which is not what patents are intended to do at all. They are intended to allow an inventor to realize an incentivized value for the public disclosure of their invention. To that end it doesn't matter when the value is realized, the inventor has done their part by disclosing the invention to the public.