okie wrote:Countless inventions never proliferated because there was no demand. For inventions that worked and demand rose, supply rose with it.
If you've ever taken any marketing courses, you'll recall that's precisely the difference between a sales plan and a marketing plan.
The old skool approach was for engineers to design something, and then have the sales department sell it. It's a comparatively modern approach to find out what consumers want, and then have that product developed and marketed.
It really is amazing how many products were developed, and sold, without a market force pushing their development.