It answers one part of your question. The other issue you pointed out doesn't actually exist. > How can a company with the resources of Apple not implement thi

It answers one part of your question. The other issue you pointed out doesn't actually exist. > How can a company with the resources of Apple not implement this basic feature? The answer, as it always is in cases like this, is that Apple thinks most users don't want or need the feature. Apple probably considers full screen mode to cover the use case of wanting two windows side-by-side. Personally, I never tile windows to either side of my screen — I prefer to have my windows laid out all over the screen and then switch using cmd+tab or mouse. IMO, this is what windows were designed for. > What fundamental problems? The ones pointed out all over this thread.