Does closed source somehow contribute to open source?

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In my earlier posts I have openly discussed my doubts about the relevance of closed source softwares and OSes in today's world. However as I delved deep into the matter, a deeper understanding has struck me.

Closed source OSes like Windows and Mac are the epitome and prototype of functionality. Eg. Windows supports practically an innumerable amount of hardware across the planet and still manages to mesmerise the user with its intuitive and friendly interface. Mac on the other hand is an icon of style and glamour. The hardware is exquisitely designed and the same goes for OSX. Linux OSes however arent as user friendly as Windows. Although a lot has changed and Ubuntu has created a benchmark for usability as far as Linux OSes are concerned, but it still has a long way to go.

Now frankly, these closed source OSes set the benchmark for usability and open source ones (harsh and unkind as it might sound) kind of follow those 'set paths'. I therefore believe that its very important that closed source apps and OSes coexist with open source ones.