Just read through the Dutch accessibility article and ... I find it incredibly hard to believe that a system like that actually works during periods of real traffic. During commute-heavy hours, there is no way in hell the NS could do this for even 0.1% wheelchair travelers on a train line. You also just don't see wheelchair users on Dutch trains. Never. I mean, it's not like I was paying attention to it and yes, there is sometimes section with a wheelchair accessible toilet, but there's never any wheelchairs there. I mean I take perhaps 2 or 3 Dutch trains per year, but still.
So to put it bluntly: I see your articles ... they paint a completely unrealistic picture, and frankly I refuse to believe that things practically work this way.
A lot of details are unspecified. They essentially say "call 3 hours in advance and we'll provide". I called "sorry we don't work at this time, call back during working hours ... blah blah blah", but of course there are (a lot of) trains riding around at the moment. So ... not during weekends ?
I hope it's not that bad. Somehow this isn't mentioned on that page. It also seems to be limited to large stations and is not generally available on either all trains or all stations.
I also refuse to believe that this can work for 10-15 wheelchair users on one train. Picturing such a situation raises all sorts of practical issues (for one, I seriously doubt that you can fit more than 5-6 wheelchairs in the biggest NS wheelchair section in a train that I've ever seen) that I'm thinking they just don't deal with.
Just no.
Additionally I'm ignoring the fact that for wheelchair users and other accessibility-challenged users the other problems of the train (such as a potentially large walking distance between the station and your house and/or your actual destination) that cars don't have as much are much worse than for normal people.
I will agree that the trains in Holland are much more usable than the trains in the Bay Area. That's certainly true. But practical for wheelchair users ? No way. Anywhere even remotely as good as having a car ? No way. (but yes, if you're rich (cars are cheaper), and live in inner city of the Hague, they're certainly more practical)