It looks trivial if you've never done it. If you actually try you'll see that manufacturing a safe, quality product at scale while turning a profit is extremely difficult.
Thankfully we have a large workforce with the experience to innovate in the manufacturing realm... oh wait.
We used to be world leaders and we collectively decided it was better for a handful of people to be wealthy instead. Excess wealth (>1 billion dollars is a nice start) should be used to improve society in ways like these and in many other ways. A society is great when it solves problems, not when people are wealthy.