He started measuring success in dollars saved and stock price increased, instead of customer satisfaction and tech cool.

Mr. Jobs famously said that Apple will do it's own thing, and the stock holders can come along for the ride, or get out. Mr. Cook's attitude seems to be more akin to a traditional industrial-era CEO, and not someone trying to further technology, the way his predecessor did.

I'm not sure you're basing your statements on anything but conjecture, but Cook has repeatedly stated the opposite:

https://www.fastcompany.com/40525409/why-apple-is-the-worlds...

The best train conductor knows best how to get a train somewhere at a specific time. If said conductor wanted to save some money on keyboards at the expense of quality because he thought it was in Apple's best interest, I wouldn't be shocked. Just because you understand Ops doesn't mean that you necessarily want to produce the highest quality at the expense of all other things.

And Apple has never been closer to being worth $1 trillion in market value.