Originally Posted by
CentralPower
This sort of thing happens with most high-powered characters and McGuffins over time. And, since the 90s, editorial discipline has eroded at the big two. It is similar to the reason that nearly no character stays dead, even z-listers like Scott or Cassie Lang.
The Infinity Gauntlet is like....a Crisis-scale event at DC. In 1985, it was the biggest arc in comics. In 2006, DC retreaded it. And, while that event was not perfect, it had some meaning. In 2008, DC brought back Barry Allen (maybe 5 years after bringing back Jason Todd) during "Final Crisis". Then, in 2011, "Flashpoint", which was effectively a Crisis. In that span of time, the Anti-Monitor came back twice, despite being intended to be used only once in the 80s.
How many times has Jean Grey died? Similarly, look at the Phoenix Force.
More generally, consider time travel or travel between universes (which are often numbered for convenience and necessity).
I am not defending Marvel or DC. But, the situation you describe with the Gauntlet is hardly unique. (And, as much as I like "Time Runs Out", you are right. The Gauntlet become a casual use McGuffin.)