Well as for OP, that's like remains to even be seen if it will even be a thing.
Other than that - it's not as much as copying but rather not being constricted by "the other team did this already" - like if there is Hawkeye it does not suddenly mean that DC should never have bow and arrow guy as well. With the huge diversity of superheroes - overlaps are inevitable, really. And starting to tiptoe around pretty basic archetypes, just because other team did it is unnecessary.
There are dozens superheroes big and small both teams, overlaps are inevitable especially because the theme is same - juiced up metahumans fighting juiced up and often metahuman and alien supervillains and forces.
DC has a superhero that flies and shoots energy beams, Marvel too... and Dragonball... and The Boys and 500 other shows and franchises - because superhero/hero flying and shooting energy beams is staple really. Should we start wondering who copied who here when it's like basic of basics - sure you could say Superman did it first, but then I wonder if this was inspired in turn by some other source and led to the whole creation of a "X flying shooting laserbeams" stock hero archetype.
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Other than that - I most certainly would like DC to continue with movies - yes they don't have something as strong as whole Avengers series, but they also have some very very good movies and eventually I do think they will find themselves.