Regarding the AJA KONA, AJA does, in fact, have an IP card version, Kona
IP, announced at NAB:
https://www.aja.com/en/news/top-stories/452
$2500 without the SFPs.
I suppose the IP-video technology is still too new to be able to use
off-the-shelf, enterprise level, network cards to take in the signal.
Dan