Title critique:
RaspberryPi is not an SoC vendor. They take proprietary SOCs from Broadcom, use proprietary firmware and build a product around it. They obviously upstream what they can, but they fundamentally are a system integrator, not an SoC vendor.
Not to disagree with your critique but just to note that they are a microcontroller vendor with the RP2040 and RP2350.
I do wonder if there is a long term wish to break their dependency on Broadcom but I suspect creating an SoC for the main Pi series is probably in the 'too difficult' category.
Yup, I really like their microcontrollers (which quite frankly nowadays what's the difference between an SOC and some of these more capable MCUs), but my comment was specifically relating to their "Linux" capable boards.
You might like the AMP hour podcast that had the team behind the RP2350 on. Lots of interesting stuff on what was involved in making it. One of my favourite podcast episodes this year.
https://theamphour.com/687-the-rp2350-with-the-raspberry-pi-...
Pis use Broadcom SoCs, not Qualcomm.
Yes, thank you for the correction.