Note that international patent law isn't national patent law. Sure, it's possible to have your patent valid in multiple areas. But e.g. Chinese patent practice

Note that international patent law isn't national patent law. Sure, it's possible to have your patent valid in multiple areas. But e.g. Chinese patent practice isn't quite in line with EU or US patent law. Secondly: patents are inherently a form of publishing your ip. The "giving away" part is enforced by laws, but the whole concept of patents is to make knowledge publicly available. Typically, "giving away" is only restricted to commercial uses - anyone who duplicates the patented invention for personal use is fine. You may argue that that is foolish for an advanced economy, but that is what most of them do.