In my view, the most striking feature of the Dutch solution is that it's not a type of bike, but a transportation system developed over a span of years within a specific niche of climate, terrain, population density, and so forth. Cargo bikes came after the system was already up and running.
Moving any specific component of that system to another niche might help a little, and I'd welcome any progress, but is not a solution.
With that said, I'm a year around bike commuter. Cargo bikes, trailers, and baekfiets are gaining popularity in my locale, especially the electrics.
People keep hoping for a technological solution to housing and transportation but the real answer is a big cultural and political shift toward apartments and walkable cities. On second thought that may be a heavier lift than self-driving cars.
Indeed, and it's also at best a long term solution. Bikes are something that can appeal to individual agency: I can get a bike and start riding tomorrow. I can't build an apartment building.
Actually, it would be my 6th bike, but that's its own problem. ;-)
I'm spoiled by where I live now, a 25 minute easy bike ride to my workplace, a similar ride for my spouse, and within walking distance of shops. It's really a lifestyle changer.
Moving any specific component of that system to another niche might help a little, and I'd welcome any progress, but is not a solution.
With that said, I'm a year around bike commuter. Cargo bikes, trailers, and baekfiets are gaining popularity in my locale, especially the electrics.