I think Netflix need the studios, but that doesn't mean they'll keep all the facilities. Cooter's Garage went in the '90s and the Mexican and Western sets have also gone. Some of the Hazzard Square buildings have been standing since the '60s, which, let's face it, is a long time for any building in the Los Angeles area!
If politics get involved, WB could go to Paramount Skydance, and they already have studios.
It would be great to think that Hazzard Square would be preserved, but as my recent post on the Warner Ranch shows, money will always win out.