Using the metaphorical (or maybe literal) model of ideas as living things - there should be conditions we can create to nurture an ecosystem of beneficial ideas. Like making a garden or farm.
Not just thinking about transmission method (memes, books, songs, art, gatherings) but also having a defined, intentional and continued program of evaluating ideas and spreading ideas.
Not sure this is what you’re asking but it’s a thought I have had.
Let take a creative job like writing for a tv show. They will hire writers that have various background and they will pull from them with interesting scenarios and ideas.
I always though that there is a nearby endless amount of random people just going about their life that might have amazing ideas for shit. They will never be a tv show writer because their an accountant or a teacher or whatever. However, they might have a ton or even one really great idea.
Me and my wife like to get high and pitch ideas back and forth. When we have a good one we put into a google doc. They’ll never see the light of day but I’m sure I’d the right person had access to them they could make them into something great.
I guess my point is there is a huge untapped creative bucket of “regular people”.