Intellectual Slavery laws of Copyrights and Patents do not in practice "promote the progress of science and useful arts". Instead they serve to transfer wealth from the majority of people to the 1%. Almost all profits from such laws flow to the richest corporations and individuals.
In places where such Intellectual Slavery laws have been flouted, such as China in the past few decades, you've seen great progress. If IS laws were followed in China, you'd have a richer Bill Gates and a lot more poor Chinese.
In the United States, in states that produce fewer information products, you see much lower standards of wealth, education, and health, as a substantial percentage of income flows from these states to IS states in return for overpriced information goods such as textbooks, software, medicine, and entertainment.
If people instead were free to use their own equipment to copy and share intellectual goods, such unnatural flows of wealth would not occur, and you would see a drastic lowering of wealth inequality, an improvement in education, a reduction in healthcare costs, an increase in higher quality educational content, and more.
The progress of science and useful arts would be accelerated, as billions of people would have access to the same information that currently only the wealth 1% have access to.
Perhaps there might be a few inventors/scientists/authors/musicians/etc who might decide without monopoly profits they won't invent, but even if there were, the impact from their abstaining from the field would not even be noticed, as there would be a flourishing of inventors/creators/etc who would thrive in the absence of restrictions on what they can do with ideas.