Nordic’s Middleware is available under a standard BSD 3-clause license. https://www.nordicsemi.com/Software-and-tools/Development-To...

Their middleware and DRIVER library is first rate, also BSD: https://github.com/NordicSemiconductor/nrfx/blob/master/LICE...

They are a first-tier active founding member and supporter of the Zephyr RTOS project by the Linux Foundation.

They’ve partnered with Segger for free use of Segger’s embedded studio for Nordic chips.

If a fraction of other companies did a fraction of THAT, Open Source would be soooo far ahead!