I don't entirely agree. The SYSV vs BSD thing was constant before either (Free,Net,Open)BSD and Linux came into a rivalry. I was there, using both across the timescale (I'd been doing sysadmin and development work on V7, Unix 32V, BSD4.1->4.2 (thats sockets) and then Ultrix/Solaris &c)
SYSV had streams/STREAMS when BSD had sockets. Arguably streams is a superior model.
NFS came to the fore in BSD. SYSV had RFS. It was a different model of network filestore.
MGR -> v8 ->Plan9 was there too. There has always been room for more than one viewpoint of what a UNIX conforming system is.
The rise of Linux has a lot to do with licence terms (for some reason the BSD 4 clause hold harmless appealed more to the embedded market) and the natural tendency of some driver vendors to write for Linux. Google deciding to deploy linux at scale inside the borg, and as Android was recognition of reality.
Van Jacobsen, who did a lot of work on TCP tuning and congestion control in the BSD kernel, wound up in Google, and stopped developing for BSD. So, BBR (for instance) came to BSD late and only because Netflix sponsored it. A bunch of the GPU driving space, WiFi card blobs, they're in Linux kernel before BSD. Docker hasn't been ported to BSD notwithstanding the possibly superior models in Jails and Bhyve, the supremacy of Dockerfile has to be understood as "mindshare"
TL;DR BSD lost a lot of "mindshare" but there was always room for a BSD-vs-SYSV-vs-Plan9 thinking, from before-times.
SYSV had streams/STREAMS when BSD had sockets. Arguably streams is a superior model.
NFS came to the fore in BSD. SYSV had RFS. It was a different model of network filestore.
MGR -> v8 ->Plan9 was there too. There has always been room for more than one viewpoint of what a UNIX conforming system is.
The rise of Linux has a lot to do with licence terms (for some reason the BSD 4 clause hold harmless appealed more to the embedded market) and the natural tendency of some driver vendors to write for Linux. Google deciding to deploy linux at scale inside the borg, and as Android was recognition of reality.
Van Jacobsen, who did a lot of work on TCP tuning and congestion control in the BSD kernel, wound up in Google, and stopped developing for BSD. So, BBR (for instance) came to BSD late and only because Netflix sponsored it. A bunch of the GPU driving space, WiFi card blobs, they're in Linux kernel before BSD. Docker hasn't been ported to BSD notwithstanding the possibly superior models in Jails and Bhyve, the supremacy of Dockerfile has to be understood as "mindshare"
TL;DR BSD lost a lot of "mindshare" but there was always room for a BSD-vs-SYSV-vs-Plan9 thinking, from before-times.