But now that they are heavily invested in Linux, it would be a good time to make them contribute.

I mean isn't this the exact same tactic they use with their as-a-service offerings all the time?

The preference for non-copyleft licenses and SaaS kind of makes their point.

It is no surprise that none of new FOSS OSes for IoT use the GPL, including Zephyr, ironically hosted by the Linux Foundation.