Regarding dating apps, anyone participating should look up the old OKCupid blog posts. The guys who launched OKCupid were data nerds and they published some scathing conclusions. Oddly enough, those posts were taken down right after Match.com bought them.

I've read that Japanese companies focus on making great products and diversifying in order to expand. This is why Yamaha, for example, makes pianos and motorcycles. I believe that American companies hyper-focus on particular markets and try to squeeze every penny that they can out of them. Combined with the short-sightedness of quarterly targets and a lack of competition through things like regulatory capture, there's less incentive to create great products.

Interesting. Where can these old blog posts be found?