It is widely understood that shipping containers are responsible for more global trade than any other factor, which has lowered the prices of goods around the world at a scale never seen before. The unprecedented demand for trade necessitated their adoption, but they are essentially a metal box on top of other metal boxes on top of a flat surface.
Shipping containers were a tremendous innovation but they required absolutely no new or novel technology to produce or deploy.
Another example: insulation. Energy costs are higher to heat in the winter than cool in the summer, but an extraordinary amount of energy is wasted due to insufficient insulation. Solving this problem would decrease energy costs, increase quality of life, and would require no new technology whatsoever.
I fear we in the tech sphere are sometimes too addicted to the lure of the future to imagine what we could do with what we already have.
I mean, shit, literally, could be solved by better toilets. Last I checked India had more cell phones than flushing toilets. Proper sanitation saves on health care costs later on. This is another very old technology that can prevent us from even needing high technology to solve the problem caused by insufficient sanitation and toilet access.
Shit happens, but it doesn't always have to.