All the obvious ones: closed platforms, walled gardens, lack of repair or upgradeability, overpriced hardware, general user and developer hostility, excessive secrecy, arrogance, security bugs, planned obsolescence. Then there's the more subjective stuff: I find their UIs appalling and I'm not a fan of their design aesthetic.
But how many of these would apply to DuckDuckGo under Apple? Are you saying that they'd wall it off to "Apple ecosystem users" only? There's no upgradeability or hardware or secrecy here.
