Before the current superhero zeitgeist, superhero shows were less common, but the right ones attracted high praise and views. As good or popular as these shows were, they weren't immune to time and outside factors. As a result, some critically acclaimed superhero shows either faded into irrelevance or were all but forgotten.
Although the 2000s was home to some of DC and Marvel's best movies, the same can't be said for their televised arm. In terms of television, there was a vacuum for quality superhero entertainment from the publishing giants, and this gave original superhero stories a chance. Enter Heroes, which eclipsed DC and Marvel during its prime in 2006.
Heroes was just like an episodic X-Men remake, and it showed how superhero stories could be told dramatically every week. As popular and critically praised as Heroes was, it was rendered irrelevant in the 2010s when DC and Marvel improved their outputs so drastically that a facsimile of their most popular characters and stories wasn't enough.