That’s true for all commercial development. No company wants to invest more than they have to. Upstreaming does save time in the long run, but not in the short term.
Technically Google could of made upstreaming easier or even the default but they instead modified the kernel a bunch and then encouraged bad practices in development.
There are of course trade offs to everything though. For instance, Qualcomm could do better.
That’s true for all commercial development. No company wants to invest more than they have to. Upstreaming does save time in the long run, but not in the short term.
Technically Google could of made upstreaming easier or even the default but they instead modified the kernel a bunch and then encouraged bad practices in development.
There are of course trade offs to everything though. For instance, Qualcomm could do better.