Suppose I am a master chef in a small village. My food preparation method is healthier and tastier than other alternatives. There is no way to reverse-engineer my food preparation method from the food I serve. I want to write a cookbook. It will take me 500 hours to write this cookbook, in which time I could just make more food to earn me some money. My secret recipes are so good that it is clear that society as a whole will be far better off if more chefs could utilize my techniques than if I spent the 500 hours cooking better meals for a small number of people. You would agree that it is better if this method was known to more people.
What incentive do I have to write this cookbook?
The only reason you approach the problem that way is because you are conditioned to think that you own ideas. In the real world you never own ideas, because often many people have the same idea, and once an idea is exposed then everybody has the same idea.
Thus the problem does not exist today or in fictional hard-core L. world. Or in other words, very little incentive. The only being, "it is clear that society as a whole will be far better off if more chefs could utilize my techniques." First off, why should society believe you? It's called hubris, and many people have it. It isn't a problem for society, as long as those people have no power... So why should society give them power?
Your problem is that you really do have good ideas that will help society. And the question is, what do you do to get your ideas out where everybody can have those same ideas?
Instead of spending 500 freaking hours (12.5 weeks at 40hrs per) to write a cookbook...
Get free kitchen help with interns who want to learn from you.
See the world (travel) and teach in exchange for room and board.
Start a school for people to pay and come learn from you.
Publish a recipe or two every now and then (like in a newspaper column or even just on your establishment's door "this is what I cooked yesterday.").
Or if you really don't care about society, just keep on moping about how if only the world were fair you could control how people use their ideas.
OK, transition to less hardcore happens here...
If society says ideas could be owned, would you charge a royalty for each time someone follows a recipe in your book? Would you sue for damages if they followed it wrong or made some changes to it? I hope the answer to both is, "of course not, that would be silly."
The ideas in the cookbook can never be owned, but the book itself -- layout, text, pictures, etc. can be owned similar to the compilation copyright today. If someone were to republish a book identical or with the exact same set or even substantially the same set of recipes as yours, it would be a violation.
But if someone took just your venison recipes and other venison recipes from many other places and put them into a new "How to Cook Venison" book, such that yours make up no more than a fraction of the whole and only a fraction of yours were used, no violation. (As they didn't just lift your pages intact!)
This is how cookbooks are treated, generally, today. And even when not food, say, programming algorithms instead, it is how recipe books are treated. And then you have some crass lawyers who come in after the fact and patent or otherwise claim ownership over said algorithms, and cause no end of grief for some deep pockets who happened to use them. Even if neither the lawyers nor the deep pockets ever saw the book, or the patent, or anything else.
(BTW, I "invented" the bubble-sort as a kid in the late 1970's. I had no idea that it had been invented long before or that it was called a bubble-sort or that it was a poor algorithm or anything like that. It was just an obvious way to sort my list. Similar "inventions" (also known as "ideas") happen every day, and when you are in the middle of it, it is obvious that the concept of IP ownership as practiced today is fundamentally flawed.)