I was so frustrated trying to find a headlight that not only lit up the road/path sufficiently but also didn't blind people or cost an arm and a leg that I had

I was so frustrated trying to find a headlight that not only lit up the road/path sufficiently but also didn't blind people or cost an arm and a leg that I had to build my own. There were literally no suitable options on the market when I looked, even though it seems like it shouldn't be a hard problem. Automobile manufacturers figured this out over a century ago.