The total cost of ownership is way below a car, due to the low cost of Uber, other people with cars, insurance and gas. In high traffic and hard parking cities like LA and Boston, I get to my destination faster. And though a bicycle is almost 7x as dangerous per mile ridden, I travel much less—maybe 1,000 miles a year instead of the 15,000 I did by car. While the weather is a problem in Boston sometimes, some gloves and a warm coat tide it over well. Besides, who wants to drive in a snowstorm? Overall, the experience holds up to close scrutiny.
Conversely, I am pretty much subsidized by other people's vehicles. And in LA, I nonetheless still owned a $1,000 Toyota with a $50/mo insurance and low hundreds in parking tickets to keep it outside. While that ownership was only a small part of time, it was necessary.
eBikes I think can really effectively complement ride sharing and car sharing. It will save everyone money. And as more people adopt them, the danger of biking will decline through changes in infrastructure like bike lanes and lower speed limits.
Ironically, probably the least persuasive thing is pointing out how the Chinese adopt eBikes. Americans don't want to emulate Chinese anything. It needs to seem cool, organic, high class. Besides, a $3,500 eBike won't break when you come to a fast stop the way a $500 eBike conversion will. Better to keep it safe and expensive than mass manufactured and dangerous.