Asking as a GNex owner: what did you expect Google to do when TI decided to exit the mobile space and could no longer maintain its drivers for newer kernels? I was pissed off, but only at TI.
- Have their own teams develop the required fixes. After all they are developing Android.
- Have had the business sense to make a proper contract with TI that would either oblige them to keep doing the fixes even after product termination or provide the relevant information for Google.
This is how a company ensures its costumers are safe from outsourcing deals.
Right now, Google can let it happen again and people can choose to properly blame Google or the OEM.