Who is taking anything for free? Do you think people go read through the patent database to get product ideas? If I create a product and bring it to market without any knowledge of your patent, why should I pay you just because you invented it earlier and then sat on it?
It's not _just_ because you invented it earlier, you also have to disclose it in a way that makes it workable. The disclosure is supposed to drive innovation and use of innovations; that's the patent deal, the monopoly is "paid" for with disclosure.
Aside, in the UK there's compulsory licensing (UKPA Section 48x to prevent people from inventing stuff and refusing to license it (at reasonable terms), too.
I would be surprised if this happened even once in the history of the patent system, and I feel confident stating it has never happened in the past 50 years. Patents do not drive innovation, they restrict it and erect barriers to entry.
