I don't think Bezos has a technical background... I thought he was a hedge fund guy before moving out to Seattle. But I agree with everything else you said.
The funny thing was, when I got hired I was told that they were going to let people use Macs and that it would be a few months. I had my own laptop I was willing to bring in and use, and though they were trailing macs with a few people, I was told I'd be fired if I used my personal mac for work.
So, I had to use a piece of crap HP laptop. The thing was always in the shop. There were many days when I basically lost an entire days worth of work because it would break. They replaced it several times. (and I was babying it.. .it lived on my desk for the most part.)
So, not only could they have had zero costs by letting me use my own machine, but they lost more than the cost of the laptop several times over in lost productivity by me not being able to work when the machine they made me use was in the shop.
And when I left, they still hadn't approved macs (or maybe the IT department decided they were "too insecure" or some BS.)
While I was there, they were constantly starting initiatives and then abandoning them. Like the restaurant menus. The movie schedules. The scanning of mail order catalogs!? They'd start some project, do a press release, then disband the team and never advance the code again... it would just sit there and rot.
I think one of the reasons that most of management there is not technical is that non-technical people are threatened by technical people in that role. Technical people have quite an edge when managing programmers. I think engineers who express an interest in moving to a management role are often perceived as a threat.