Provide funding for permanent positions. I'm currently in the last few months of my first postdoc in condensed matter physics (think superconductors, quantum computers etc.) but will move into industry next year for lack of perspectives towards a permanent position in a reasonable place. As far as I can tell, my research so far was not substandard and the software I wrote has enabled quite a few projects which otherwise would have not been possible or taken much longer. Most people I talk to (both inside and outside academia) express some degree of disappointment over people like me leaving (after 4 years PhD + 2 years Post-doc) but none of them put their money where their mouth is.

To be clear, I can understand that a PhD candidacy justifies a temporary contract and I'm not even asking for a permanent position directly after a PhD (as would be standard in industry), I'm only asking for a reasonably safe perspective towards a permanent position reasonably soon after graduating. Can't exactly start a family if you don't have any kind of job security beyond the next couple months.