Earlier quoted context omitted.
Bike theft seems like one of those quality-of-life crimes (like graffiti and coercive squeegee-monkeys) that's begging for some kind of creative enforcement strategy. Or just plain old boring regular enforcement, like Germany and Japan have, which is how they end up with a far lower crime rate than the US or the UK for example. (They also have a better social safety net, that's part of their low crime rates too.)
Having had two regular bicycles stolen over ten years in Tokyo, I would disagree that the problem is non-existent in Japan, though street crime is indeed relatively rare. Bicycles are commonly used by the majority of people. Authorities need staff dedicated to keeping streets near stations from getting clogged up with secured bikes. An unsecured bicycle near a station might be used as a free ride home by a drunken sa…
Two bicycles over ten years compared to how many you would get stolen in the US is "nothing".
That's the problem when comparing crime rates in the US and Japan, people in Japan still feel like there's tons of crime. I suggest you spend a couple of years living in a large US city. I hear San Francisco is very nice.