Maybe I am not looking at this right, but I was handicapped with a mobility issue for nearly 5 years. Yes, I was lucky to overcome it. From wheelchair to cane to the best that I can do on my two feet now, but still limited. I realize my situation is different from what others may have to endure, and thankfully, my situation has improved enough that the wheelchair is gone. But the cane does come back in the picture from time to time.
OK, so to my point.....when I did get enough courage to try and travel by train, it took planning on my part. I tried to secure the closest seat to the vestibule at all costs. I did not want end up seated in the middle of the car - longer struggle to get to the vestibules. Wheelchair - it was one end of the car or the other anyway, no problem. But if I was still in a wheelchair, I would not want to be wheeled down the center aisle of the train to get from car to car. I don't really get this. Even with a disability, I'd rather have the wider seat and leg width on the train. For me to do the plane - forget it. I could if I really wanted to struggle, but with the way my legs are, I can't 'maneuver" with the seats on a plane. Long story and you'd have to understand my disability. And to get down the center aisle of a train car - for what? Someone would still be pushing my wheelchair.......If I wanted something from the cafe, I'd try to get a seat in the car next to to the cafe. When I was on a cane, I would ALWAYS reserve the sleeper next to the Diner on the long distance trains so that if I felt I could make it to breakfast or dinner, it wasn't going to be that much of a walk or struggle to get to the Diner. It's not the steps and the cane - but rather the distance. And I certainly have the option to take meals in my room. I'd rather have a comfortable and more room at my seat than wider aisles. There's still room for wheelchairs (should that come back into play in my life again) at either end of the vestibule. The seating on the Venture cars are subpar and belong to the commuter railroads at best, not for Amtrak, regardless if the States ordered them.
And make this post with a lot of respect for those who are disabled or have mobility issues. This was an absolutely nightmare for me and I know it is for anyone with mobility issues.