As a knowledge worker, I know for a fact that the market rates for my work have everything to do with the calculated need the company that hired me for has, and

As a knowledge worker, I know for a fact that the market rates for my work have everything to do with the calculated need the company that hired me for has, and any intellectual property that may get produced by that work is only captured as a matter of course, because despite commanding a decent amount of negotiating power even for technical fields, it is very difficult to negotiate a contract that assigns a license rather than full ownership of IP to the company just due to most people not reading contracts and it being "standard practice" by now. If someone told you that they've factored the speculative value of potential future IP into your rate somehow, they're bullshitting you