champs that win by losing

Why do champs like {{champion:105}} {{champion:238}} {{champion:157}} {{champion:38}} {{champion:92}} {{champion:107}} {{champion:58}} {{champion:517}} never really fall back? Fighting them always feels like a chore and even if you beat them in lane they will still end up 1 shotting you because they reached their 1 item powerspike. And especially {{champion:105}} {{champion:238}} {{champion:157}} they can miss every single ability but still end up winning because of how mobile or overturned they are. You just never win against them even at their weakest points it always feel like a chore. Is it poor design? or the fact that the meta favors mobility and damage? I honestly dont see how mages have any chance against these champs where their main thing was waveclear, but now ad champs and assassins have way better waveclear.
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