@Smorty@lemmy.blahaj.zone when humans have their basic needs all satisfied, and they feel secure and mostly content with life, they naturally become very creative and innovative.
Think about it: if you were not worried about paying rent every month, not worried about medical bills, not worried about where your next meal is coming from, and the job you did only require you work 6 huors a day 4 days a week, what would you do with your abundant free time? You might have kids and devote your life to them, and that is really helpful for perpetuating society. You might be happy to just play video games and watch TV and movies and maybe read fictional novels in all of your free time, and that would be totally OK too.
But a lot of people would get antsy, they would want to find tasks for themselves to perform. They may devote themselves to sport, and become the best players in the world. They may devote themselves to art, and without a free market to satisfy, without a business case to defend the art you make, the art you make would be truly free and likely very innovative. Even in engineering and science, in which some creativity is required to come up with innovative solutions to problems, if you don't have to worry about making things that are marketable, you just want to make things that you think are cool and useful for yourself, it may turn out to be useful for millions of other people.