The Odyssey has only been adapted a handful of times in English-language film (1954, 1981, 1997, 2000, and 2024) and only three of those were in the cinema (and one of them was O Brother, which is not a direct adaptation). It’s had fewer attempts at bringing it to the English-speaking screen than Robin Hood, King Arthur, the Iliad, or even Dune.
There’s also the issue that (not surprisingly) most people have not read the Odyssey in its original form (I’ve only read a few verses at school) and therefore most versions they’ve read are adaptations such as Roger Lancelyn Green or Stephen Fry, which also affects the way the story is told.