Speaking from my UK perspective - an ebike would entirely replace my car for nearly all of my travelling needs, except that it's impossible to leave it safely in any public space - bicycle theft is absolutely rampant and prosecution is nearly zero, an expensive bike will be stolen, it's just a question of when not if.
It's just a very solid obstacle to this becoming a major way of travelling unless something is done about bike theft.
Given that motorcycle theft is also rampant and thieves have no issue moving a 200kg motorbike onto a van or a trailer, I'd assume it's not going to be a problem. But admittedly I don't know if cargo bikes and similar are also commonly stolen.
It's just a very solid obstacle to this becoming a major way of travelling unless something is done about bike theft.