You know that most time concurrency is sold to us as good and maybe in some parts this could be true. If you like to buy a gadget and there are some companies building it to fit your best ideas.
But in daily life you experience also the bad counterpart of this. For example to play a game with a windows system, what is a huge monopole and interfere with the above. So you have a soundchip onboard and windows itself is the first binding a audio mixer with lots of options to it. Than the chip producer install it’s audio mixer in concurrency to the windows one into the system. Now you like to game or hear music with that and your game or audio player deliver the third audio mixing system. You know what the result is, study the mixer, fight the concurrency or you have the baddest crap sound ever experienced with human ears. But hey this is industry monopole and must be this way, the people seem to like it. If microsoft will build a car, you have 3 steering wheels, 9 foot pedals and 15 gears to drive it.
You know that most time i advertise to use linux operating systems and YES there is only one audio mixer and the music sounds pretty well without anything to do. Press play and be amazed, because linux operating systems are straight forward, created from people for the people to achieve the best from their computer.