Discuss this article by @Thande here!
In the 1950s the popularity of superheroes declined in favour of other genres – which represents another example of a flaw in the natural historiographic assumption that superheroes have always been ubiquitous. But the superhero genre came back into popularity in the early 1960s, a period now known as the Silver Age (with the 1930s and 40s as the Golden Age).
The 1970s also saw the release of the Christopher Reeve Superman film in 1978, one of the first archetypal blockbusters along with “Jaws” and “Star Wars”. The film’s tagline, ‘You’ll Believe a Man Can Fly!’ summed up its broader impact. For the first time in a while, people were actually taking superheroes seriously rather than as an inherently campy and self-parodying genre.
The second really big and influential superhero film was Tim Burton’s “Batman” in 1989. Despite being a smash hit, one that married a neo-noir interpretation of the setting of the original 1930s Gotham with the modern dark and gritty interpretation of the Batman setting, it seemed strangely unable to dent the public’s firm conviction that Batman was always Adam West-style shenanigans. (Of course, the mixed messages sent out by there being kids’ toys based on a film involving torture, poison gas and a crazed psychopath did not help). Despite its success and having sequels, this didn’t seem to open the floodgates for many more superhero adaptations – barring a questionable DC adaptation of the obscure “Steel” in 1997.
In 1998 the second Marvel film adaptation came out, adapting the vampire hunter “Blade”. The film was successful in its own right but was not tied to any comic property that would be recognisable to the average viewer, so it’s questionable whether it really counts. 2000 saw the release of “X-Men”, an unambiguous success of a comic adaptation to film.
I've a theory on this that I plan to commit to an article at some point in the future. Batman (1989) did open the floodgates, but for pulp hero adaptations rather than , with the likes of Dick Tracy (1990), The Phantom (1996), The Rocketeer (1991), and, coming full circle, The Shadow (1994). My notion is that the powers that be, who greenlit the films, were old enough that they connected Batman with the pulp heroes you mention preceding and inspiring him. If not the prose or comics then perhaps the cliffhanger serials you also mention.
Possibly a large part of this is Burton's gothic-camp-noir style for the film? It doesn't look like what Hollywood thought superheroes look like but does look like pulp fodder.