Yup. You have to pay for what you use. For some things, that's a pricetag in dollars that you can look at on your balance sheet. For all software except that cast into the public domain, that's an obligation to use it in the ways that the license requires. If the price for a library in dollars is too high, you either grit your teeth and pay it, or you find some other way to accomplish your goal within the law. If the price for software in usage rights is too high, you make the same decision.