Haste makes waste
All speculative of course. Keep in mind though the importance of hands, and specifically opposable thumbs, in tool making; and the importance of tool making to advancing intelligence. Dolphins and toothed whales have larger frontal lobes than humans but lack the ability to craft tools. Something to consider when you're theorizing about advanced aliens.
Not believing in supply and demand is like not believing in gravity. Even Marx didn't dispute the validity of supply and demand, he just advocated policies to change its outcomes. Communism simply moved the needle, it didn't change the law.