Intel / AMD should be the template - actually hiring FOSS hackers to make you a proper driver for whole-stack support.
It is nice that they released an older chips driver code, it is better than nothing (and better than just programming manuals) but we have companies like Qualcomm with the Atheros driver, Intel with their wifi, gpu, and ethernet drivers, and AMD with their chipsets, gpus, etc all contributing engineers in the kernel to make foss drivers, and we shouldn't give any company too much credit for doing any less than the same.
It is nice that they released an older chips driver code, it is better than nothing (and better than just programming manuals) but we have companies like Qualcomm with the Atheros driver, Intel with their wifi, gpu, and ethernet drivers, and AMD with their chipsets, gpus, etc all contributing engineers in the kernel to make foss drivers, and we shouldn't give any company too much credit for doing any less than the same.