NVIDIA is currently maybe more interested to be seen as a good and trustworthy company than ever, because of the ongoing ARM deal. So it is maybe a good time to pressure NVIDIA to open source some drivers for their older GPU models (models like the GT710 and GT730 are still produced and one of the few GPUs without any unfree firmware, unfortunately the Nouveau drivers could be better).
Lets say NVIDIA would get portrayed on sites like Twitter and Reddit as suspicious or untrustworthy by a lot of people, because they open source way less than their competition (AMD and Intel) and people of the open source community would actively ask parts of the UK government (they would need to agree to the ARM deal) not to trust NVIDIA. This could maybe put enough pressure on NVIDIA to open source some things. But this would of cause only work, if enough people would participate in this and tell others to participate.
Also other deals that NVIDIA maybe wants to do and that need the agreement of a government or organization that is interested in the public opinion could be used to pressure NVIDIA.
Are you interested in this?