If the premise is "Another low budget, high concept 1970s SF show like Galactica, 1999, Quark, Starlost, Buck Rogers, Ark II, Return to the Planet of the Apes, Jason of Star Command would have similarly been a failure," I would agree. Star Trek survived by becoming a movie series that was adapted back into TV.
Battlestar Galactica had two things not going for it, Too pensive to produce and very poor overall writing
Quark was funny show but, the problem was, no one watched it.
Planet o the Apes much have fared better had Jacobs not died and if int had only been given a better time slot
Buck Rogers , lot film was decent , the problem was the series that came after wasn't very good , less so with the Searcher and season 2
Space 1999 had a very obvious flawed concept undermined the show , Seaon one had some good writing . season 2 truly godawful and hiring Fred Freiberger was not a the best idea .
Ark II interesting concept , but pretty dull stuff. This one I would lie to see rebooted.
Space Academy and
Jason of Star Command were at least entertaining and both of hose would befit from being rebooted.
Login's Run Could have been successful with different lead actors and also a better time slot.
The 1970's was a very barren decade in terms of televised science and so was most of the 1980's . Ther was the
Six Million Dollar Man which started out decently but got steadily worse as it progressed. The series finally jump the Shark with the Bigfoot episodes. The best science fiction show on tv was
Dr Who and yes is many of its peacial special effect were bargain basement, but it had some excellent writing , acting and drama.