Ideas are easy to find, it's just that the bounds that we have been limited to work within, both economically and societally, have become tighter and tighter. Today, the leadership of the vast majority of private institutions have only the goal of increasing their own economic power, and similarly there is constant media production reminding people how important the almighty economy is, causing people to focus on any…
Is there reason to think that people in the past were more selfless and less economically motivated? I'd wager that throughout history, most great ideas and optimizations came from people who were either seeking profit or other kinds of status (eg recognition from peers).
I also think there's a difference between an inventor coming up with an idea in hopes of selling it, versus the modern VC-funded apparatus of blitzing social media, adtech, and blackhat SEO to generate. In the past there were gate-keepers to distribution which have in many cases been disintermediated, and for a while there was a golden age where small independent producers could get internet distribution because the old giants (Apple, Microsoft) were too big and slow to capture it. But once Google and Facebook came of age, and VCs figured out the playbook, independents are once again at a disadvantage.